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study help
mathematics
precalculus 1st
Questions and Answers of
Precalculus 1st
For the following exercises, use a graphing calculator to evaluate.cos π/10
For the following exercises, use a graphing calculator to evaluate.sin π/10
For the following exercises, use a graphing calculator to evaluate.cos 5π/9
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. (-0.948,-0.317) -0.948, t -0.317
For the following exercises, use a graphing calculator to evaluate.sin 5π/9
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. (-0.649, 0.761) -0.649 0.761 t
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. 2 t 3 2 (³-4) 2
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. t (0, -1)
The height of a piston, h, in inches, can be modeled by the equation y = 2cos x + 5, where x represents the crank angle. Find the height of the piston when the crank angle is 55°.
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. (-V3 2 V 3 2 t 1 4 2
The equation P = 20sin(2πt) + 100 models the blood pressure, P, where t represents time in seconds. a. Find the blood pressure after 15 seconds.b. What are the maximum and minimum blood
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. 2 V3 2 3 -)
The amount of sunlight in a certain city can be modeled by the function h = 16cos (1/500d).where h represents the hours of sunlight, and d is the day of the year. Use the equation to find how many
A car travels 3 miles. Its tires make 2640 revolutions. What is the radius of a tire in inches?
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. 2 V2 √√2 V2 2 t
The amount of sunlight in a certain city can be modeled by the function h = 15 cos (1/600d), where h represents the hours of sunlight, and d is the day of the year. Use the equation to find how many
A bicycle has wheels 28 inches in diameter. A tachometer determines that the wheels are rotating at 180 RPM (revolutions per minute). Find the speed the bicycle is travelling down the road.
For the following exercises, use identities to simplify the expression.sec t/csc t
Find the linear speed of the moon if the average distance between the earth and moon is 239,000 miles, assuming the orbit of the moon is circular and requires about 28 days. Express answer in miles
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. -0.596 t 0.803 (0.803,-0.596)
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. 0.994 (0.111, 0.994) t 0.111
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. (-1,0) t
A city is located at 75 degrees north latitude. Assume the radius of the earth is 3960 miles and the earth rotates once every 24 hours. Find the linear speed of a person who resides in this city.
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. t € (1, 0)
For the following exercises, use identities to evaluate the expression.Determine whether the function f(x) = csc2 x + sec x is even, odd, or neither.
A city is located at 40 degrees north latitude. Assume the radius of the earth is 3960 miles and the earth rotates once every 24 hours. Find the linear speed of a person who resides in this city.
For the following exercises, use identities to evaluate the expression.Determine whether the function f(x) = sin x − 2cos2 x is even, odd, or neither.
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. t V2 2 V2 2 (V2 -V2) 2
Two cities have the same longitude. The latitude of city A is 9.00 degrees north and the latitude of city B is 30.00 degree north. Assume the radius of the earth is 3960 miles. Find the distance
For the following exercises, use identities to evaluate the expression.Determine whether the function f(x) = 3sin2 x cos x + sec x is even, odd, or neither.
Consider a clock with an hour hand and minute hand. What is the measure of the angle the minute hand traces in 20 minutes?
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. G 3 2 2 t V3 2
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. V3 (금) 2 루 V3 2 t
For the following exercises, use identities to evaluate the expression.Determine whether the function f(x) = 2sin x cos x is even, odd, or neither.
Find the distance along an arc on the surface of Earth that subtends a central angle of 7 minutes (1 minute = 1/60 degree). The radius of Earth is 3,960 miles.
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. V3- 2 t (⑥) 2
For the following exercises, use identities to evaluate the expression.If cot(t) ≈ 0.58, and cos(t) ≈ 0.5, find csc(t).
Find the distance along an arc on the surface of Earth that subtends a central angle of 5 minutes (1 minute = 1/60 degree). The radius of Earth is 3,960 mi.
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. V2 2 (44) 2 2 t V2 2
For the following exercises, use identities to evaluate the expression.If csc(t) ≈ 3.2, and cos(t) ≈ 0.95, find tan(t).
A person is standing on the equator of Earth (radius 3960 miles). What are his linear and angular speeds?
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. t V3 2 V (₁. ✓3) 2
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. 3 2 V 3 2 2- t
For the following exercises, use identities to evaluate the expression.If tan(t) ≈ 1.3, and cos(t) ≈ 0.61, find sin(t).
When being burned in a writable CD-R drive, the angular speed of a CD varies to keep the linear speed constant where the disc is being written. When writing along the outer edge of the disc, the
For the following exercises, use identities to evaluate the expression.If tan(t) ≈ 2.7, and sin(t) ≈ 0.94, find cos(t).
A CD has diameter of 120 millimeters. When playing audio, the angular speed varies to keep the linear speed constant where the disc is being read. When reading along the outer edge of the disc, the
For the following exercises, use the given point on the unit circle to find the value of the sine and cosine of t. V2 2 V2 V2 22 2
For the following exercises, use a graphing calculator to evaluate.sec 310°
A wheel of radius 14 inches is rotating 0.5 rad/s. What is the linear speed v, the angular speed in RPM, and the angular speed in deg/s?
For the following exercises, use a graphing calculator to evaluate.cot 140°
A wheel of radius 8 inches is rotating 15°/s. What is the linear speed v, the angular speed in RPM, and the angular speed in rad/s?
For the following exercises, find the requested value.State the range of the sine and cosine functions.
For the following exercises, use a graphing calculator to evaluate.cot 33°
For the following exercises, use a graphing calculator to evaluate.sec 3π/4
For the following exercises, use a calculator to find the length of each side to four decimal places.A 200-foot tall monument is located in the distance. From a window in a building, a person
For the following exercises, use a graphing calculator to evaluate.csc π/4
A truck with 32-inch diameter wheels is traveling at 60 mi/h. Find the angular speed of the wheels in rad/min. How many revolutions per minute do the wheels make?
For the following exercises, use a graphing calculator to evaluate.tan 98°
For the following exercises, use the angle in the unit circle to find the value of the each of the six trigonometric functions. V2 2 t 2 (V₂ V₂) 2 2 V2 2 -X
For the following exercises, use reference angles to evaluate the expression.If cot t = 9.23, what is the cot(−t)?
For the following exercises, use the given information to find the area of the sector. Round to four decimal places.A sector of a circle with radius of 0.7 inches and an angle of π radians.
For the following exercises, solve for the unknown sides of the given triangle.A 15-ft ladder leans against a building so that the angle between the ground and the ladder is 70°. How high does the
For the following exercises, find the reference angle, the quadrant of the terminal side, and the sine and cosine of each angle. If the angle is not one of the angles on the unit circle, use a
For the following exercises, use a calculator to find the length of each side to four decimal places.A 400-foot tall monument is located in the distance. From a window in a building, a person
For the following exercises, use the angle in the unit circle to find the value of the each of the six trigonometric functions. 2 t V3 2 2
For the following exercises, find the angle between 0° and 360° that is coterminal to the given angle.−40°
For the following exercises, solve for the unknown sides of the given triangle.The angle of elevation to the top of a building in Baltimore is found to be 4 degrees from the ground at a distance of 1
For the following exercises, find the requested value. If cos(t) = 1/7 and t is in the 4th quadrant, find sin(t).
For the following exercises, use the angle in the unit circle to find the value of the each of the six trigonometric functions. (-4-4- V3 2 t X
For the following exercises, use a calculator to find the length of each side to four decimal places.There is an antenna on the top of a building. From a location 300 feet from the base of the
For the following exercises, find the angle between 0° and 360° that is coterminal to the given angle.−110°
For the following exercises, find the requested value.If cos(t) = 2/9 and t is in the 1st quadrant, find sin(t).
For the following exercises, use a calculator to find the length of each side to four decimal places.There is lightning rod on the top of a building. From a location 500 feet from the base of the
For the following exercises, find the angle between 0° and 360° that is coterminal to the given angle.700°
For the following exercises, find the requested value.If sin(t) = 3/8 and t is in the 2nd quadrant, find cos(t).
For the following exercises, use a graphing calculator to evaluate.csc 5π/9
A 33-ft ladder leans against a building so that the angle between the ground and the ladder is 80°. How high does the ladder reach up the side of the building?
For the following exercises, find the angle between 0° and 360° that is coterminal to the given angle.1400°
For the following exercises, find the requested value.If sin(t) = −1/4 and t is in the 3rd quadrant, find cos(t).
For the following exercises, use a graphing calculator to evaluate.cot 4π/7
A 23-ft ladder leans against a building so that the angle between the ground and the ladder is 80°. How high does the ladder reach up the side of the building?
For the following exercises, find the angle between 0 and 2π in radians that is coterminal to the given angle.−π/9
For the following exercises, use a graphing calculator to evaluate.sec π/10
For the following exercises, find the requested value.Find the coordinates of the point on a circle with radius 15 corresponding to an angle of 220°.
The angle of elevation to the top of a building in New York is found to be 9 degrees from the ground at a distance of 1 mile from the base of the building. Using this information, find the height of
For the following exercises, find the angle between 0 and 2π in radians that is coterminal to the given angle.10π/3
For the following exercises, use a graphing calculator to evaluate.tan 5π/8
For the following exercises, find the requested value.Find the coordinates of the point on a circle with radius 20 corresponding to an angle of 120°.
The angle of elevation to the top of a building in Seattle is found to be 2 degrees from the ground at a distance of 2 miles from the base of the building. Using this information, find the height of
For the following exercises, find the angle between 0 and 2π in radians that is coterminal to the given angle.13π/6
For the following exercises, find the requested value.Find the coordinates of the point on a circle with radius 8 corresponding to an angle of 7π/4.
Assuming that a 370-foot tall giant redwood grows vertically, if I walk a certain distance from the tree and measure the angle of elevation to the top of the tree to be 60°, how far from the base of
For the following exercises, find the angle between 0 and 2π in radians that is coterminal to the given angle.44π/9
For the following exercises, find the requested value.Find the coordinates of the point on a circle with radius 16 corresponding to an angle of 5π/9.
For the following exercises, find the requested value.State the domain of the sine and cosine functions.
A bicycle with 24-inch diameter wheels is traveling at 15 mi/h. Find the angular speed of the wheels in rad/ min. How many revolutions per minute do the wheels make?
For the following exercises, find the reference angle, the quadrant of the terminal side, and the sine and cosine of each angle. If the angle is not one of the angles on the unit circle, use a
For the following exercises, solve for the unknown sides of the given triangle. b 5 a 30⁰
For the following exercises, use the given information to find the area of the sector. Round to four decimal places.A sector of a circle with diameter 10 feet and an angle of π/2 radians.
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