# trig identities

cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees.

write the expression as the sine, cosine, or tangent of an angle.

1. 👍
2. 👎
3. 👁
1. use the identity:
cos(A-B)= cosAcosB + sinAsinB

cos94°cos18° + sin94°sin18° = cos(94-18) = cos 76°

1. 👍
2. 👎

1. 👍
2. 👎
3. yes, check it out with a calculator.

1. 👍
2. 👎

## Similar Questions

1. ### Maths

The bearing of A from B is 060 degrees. What is the bearing of B from A? Is it: a) 60 degrees b) 240 degrees c) 120 degrees d) 200 degrees p.s. The questions I sent earlier was an acccident To get reciprocal bearings, add 180

2. ### Math

A density graph for all of the possible temperatures from 60 degrees to 260 degrees can be used to find which of the following? a. The probability of a temperature from 90 degrees to 180 degrees b.The probability of a temperature

3. ### Math

Which table best represents the graph of the equation theta=45 degrees? a. theta- 45 degrees, 45 degrees, 45 degrees, 45 degrees r- 1 , 2 , 3 , 4 b. theta- 45 degrees, 90 degrees, 135 degrees, 180 degrees r- 1 , 2 , 3 , 4 c.

4. ### Math

Four of the angles of a pentagon measure 85 degrees, 110 degrees, 135 degrees, and 95 degrees. Find the measure of the missing angle. A. 115 degrees B. 95 degrees C. 135 degrees D. 85 degrees Is the answer D?

1. ### Just Help- Algebra

What is the Sum of the interior angles for a pentagon? 900 degrees 540 degrees 720 degrees 108 degrees

2. ### physics

Question 1 A vector in the xy plane has a magnitude of 25m and an x component of 12m. The angle it makes with the positive x axis is: a. 64 degrees b. 61 degrees c. 26 degrees d. 241 degrees e. 29 degrees

3. ### math

What is the sum of the exterior angles in a regular 13-gon? A. 152.3 degrees B. 1980 degrees C. 360 degrees D. 3960 degrees

4. ### math:^]

Which of the following are also representations of (2.5, 135 degrees)? Select all that apply. [2 answers] a. (2.5, -225 degrees) b. (-2.5, -225 degrees) c. (-2.5, 45 degrees) d. (-2.5, -45 degrees) e. (-2.5, 315 degrees)

1. ### Math

What Is the measure of an angle that is complementary to a 47 degrees angles? A. 43 degrees B 53 degrees~~~ C. 153 Degrees D. 180 Degrees

2. ### Math

1. Hannah drew a pattern using only equilateral triangles. Which of the following statements about the angles is an equilateral triangle is true? A. The measurement of each angle is 60 degrees** B. The measurement of each angle is

3. ### Math

One angle of an isosceles triangle is 28°. What are the other 2 angles? (Choose all that apply.) 76 degrees and 76 degrees 116 degrees and 116 degrees 28 degrees and 152 degrees 28 degrees and 124 degrees

4. ### Geometry

Which if the following is equivalent to 7pi/4? A.285 degrees B. 305 degrees C. 315 degrees D. 330 degrees E. 375 degrees