Question: Find the exact value of each expression. cos 285 cos 195

Find the exact value of each expression.


cos 285° • cos 195°

Step by Step Solution

★★★★★

3.53 Rating (167 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

cos285 cos195 cos240 45 cos24045 ... View full answer

blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Precalculus Questions!

Q:

Find the exact value of each expression. a. b. c. d. -14 sin sin sin(sn(-3) sin sin cos (cos (-45))

Q:

Find the exact value of each expression. cos(2tan -1 4/3)

Q:

Find the exact value of each expression. sin 195 cos 75

Q:

hello i need help with the following questions, if you can help i will rate your answer thanks!! - 1. Use the formulas for lowering powers to rewrite the expression in terms of the first power of...

Q:

In the following problem, the expression is the right side of the formula for cos(a - B) with particular values for a and B. COS 72 COS -# + sin( 12 sim ( ) a. Identify a and B in the expression. The...

Q:

In the following problem, the expression is the right side of the formula for cos(a - B) with particular values for a and B. a. Identify a and B in the expression. The value of a is The value of B is...

Q:

Write the expression as the sine, cosine, or tangent of a double-angle. Then find the exact value of the expression. cos 2120 - sin 2120 Which expression is cos - 120" - sin 120 equal to? Select the...

Q:

Find the exact value of the expression. COS 12 410 410 O A. cos 12 COS = sIn COS + COS sin 6 3 6 3 6 O B. cos COS = COS + sin 12 3 4 COS sin 3 4 3 4 O c. cos COS = COS COS - sin 12 4 4 sin 4 O D. cos...

Q:

I need help on this question Find the exact value of the expression. cos 5 cos 25 - sin 5 sin 25 cos 5 cos 25 - sin 5 sin 25* = (Simplify your answer, including any radicals. Use integers or...

Q:

Find the exact value of the expression. cos tan 4 1. + COS -1 3 20] 4 7 cos tan -1 + COS -1 3 25 (Simplify your answer, including any radical expression.)

Q:

Consider a mono atomic solid with a weakly bound cubic lattice, with each atom connected to six neighbors, each bond having a binding energy of 3.9 x 103 eV. When this solid melts, its latent heat of...

Q:

Ike issues $180,000 three-year 11% bonds dated January 1, 2019, which pay interest semiannually on June 30 and December 31.They are issued at $184,565.When the market rate is 10%. A) Register the...

Q:

What is meant by the Marshall-Lerner condition? Do recent empirical studies suggest that world elasticity conditions are sufficiently high to permit successful depreciations?

Q:

12. Have there been any fluctuations in revenue? If so, what caused them?

Q:

In Problems 3974, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 3x- = -4 5x +4y = 5

Q:

In Problems 35 42, graph each system of inequalities. xy > 4 y > x + 1

Q:

In Problems 1750, find the partial fraction decomposition of each rational expression. 7x + 3 x3 - 2x - 3x

Q:

The Aleutian Company produces two products, Rings and Dings. They are manufactured in two departments, Fabrication and assembly. Data for the products and departments are listed below. Product Number...

Q:

You have been asked by the President of your company to evaluate the proposed acquisition of a new spectrometer for the firm's R&D department. The equipment's basic price is $70,000, and it would...

Q:

Preferably in excel with formulas please The cooked up spread. You have been doing research on General Electric Company (GE). You note that Ford is currently trading at $6.43. After doing some...