Without using a calculator, show that cos 60cos 45 = cos 30
Question:
Without using a calculator, show that cos² 60°cos² 45° = cos² 30°
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 78% (14 reviews)
The identity cos 1 sin can be used to show that cos 60cos 45 cos 30 Starting w...View the full answer
Answered By
Rodrigo Louie Rey
I started tutoring in college and have been doing it for about eight years now. I enjoy it because I love to help others learn and expand their understanding of the world. I thoroughly enjoy the "ah-ha" moments that my students have. Interests I enjoy hiking, kayaking, and spending time with my family and friends. Ideal Study Location I prefer to tutor in a quiet place so that my students can focus on what they are learning.
5.00+
1+ Reviews
10+ Question Solved
Related Book For
Cambridge IGCSE And O Level Additional Mathematics
ISBN: 9781510421646
1st Edition
Authors: Val Hanrahan, Jeanette Powell
Question Posted:
Students also viewed these Sciences questions
-
Without using a calculator find the value of each of the following, and then use the n C r key on your calculator to check your answers. a. 5 C 1 b. 6 C 3 c. 4 C 4 d. e. f. 4)
-
Evaluate each expression without using a calculator or state that the value does not exist. Simplify answers to the extent possible. a. cosh 0 b. tanh 0 c. csch 0 d. sech(sinh 0) e. coth(ln 5) f....
-
Without using a calculator or a table of logarithms, find the following: (a) ln (100.000), (b) ln (0.0010000), (c) log 10 (e)
-
In Figure, a square of edge length 20.0 cm is formed by four spheres of masses m1 = 5.00 g, m2 = 3.00 g, m3 = 1.00 g, and m4 = 5.00 g. In unit-vector notation, what is the net gravitational force...
-
Ammonium nitrate, NH4NO3, is used as a nitrogen fertilizer and in explosives. What is the molar mass of NH4NO3?
-
A hotel housekeeper, Alison Harvey, was observed five time son each of four task elements, as shown in the following table. On the basis of these observations, find the standard time for the process....
-
Bonnie and Clyde have a partnership to run their human resource management services firm. Account balances related to their equity for the year ended 30 June 2026 are as follows: Profit of $124 000...
-
The Cambro Foundation, a nonprofit organization, is planning to invest $104,950 in a project that will last for three years. The project will produce net cash inflows as follows: Required: (Ignore...
-
1. The above image shows a thin lens of focal length 5m. (i) What is the kind of lens shown in the above figure? (ii) If a real inverted image is to be formed by this lens at a distance of 7m from...
-
During the taking of its physical inventory on December 31, 20Y7, Combine Engine Company incorrectly counted its inventory as $274,100 instead of the correct amount of $270,700. Indicate the effect...
-
Prove that = 1 + 1/tan 2 = 1/sin 2 .
-
Prove that 4cos 2 + 5sin 2 = sin 2 + 4.
-
Consider the previous reaction in equilibrium at 300 F, 750 psia. For an initial composition of 25% nitrogen, 75% hydrogen, on a mole basis, calculate the equilibrium composition.
-
Acacia Manufacturing has compiled the following information from the accounting system for the one product it sells: Sales price Fixed costs (for the month) Marketing and administrative Manufacturing...
-
Should social media platforms like Facebook maintain the practice of granting access to user data to third parties, including individual researchers or companies like Cambridge Analytica, using APIs...
-
On January 1, 2XX1, Bald Eagle Corporation purchased 100% of the common stock Ohio Enterprises for $1,800,000. This transaction is a "nontaxable" acquisition under the Internal Revenue Code. On the...
-
Edith, Inc. purchased all of Award Corporation's common stock on January 1, 2XX0, for $2,000,000 cash. Award's stockholders' equity amounted to $800,000. The excess of $1,200,000 was due to...
-
Putnam's measurement of social constructs is, as he notes himself, limited by the evidence he is able to assemble and evaluate. Consider a context which you believe is rich in social interaction and...
-
Suppose that L1: V W and L2: Z are linear transformations and E, F, and G are ordered bases for V, W, and Z, respectively. Show that, if A represents L1 relative to E and F and 6 represents L2...
-
How many years will it take a $700 balance to grow into $900 in an account earning 5%?
-
a. Differentiate x ln x with respect to x. b. hence finds ln x dx.
-
a. Find (1 6/x 2 ) dx. b. Hence find the value of the positive constant k for which 3k dx = 2.
-
A curve is such that dy/dx = 5/2x 1 for x > 0.5. Given that the curve passes through the point (1, 3), find the equation of the curve.
-
Suppose that a small ultralight is powered by a gasoline engine. The cruising speed for the ultralight is 33 mph. a. Assume that it requires 25 hp of thrust to power the ultralight at 33 mph and...
-
19. The town of Calculusville is 95 m above sea level and the town of Vectorville is 178 m above sea level. The two towns are 4.8 km apart along a straight, smooth road. A family decides to move from...
-
5. If a spacecraft was approaching an object of large mass what would happen to the radio signals transmitted from the spacecraft as it gets closer to the mass?
Study smarter with the SolutionInn App