For angle theta with the point (15, -8) on its terminating side, what is the value of cosine? A) -8/18 B) 15/17 C) -8 D) 15

asked May 17, 2017 222k views

2 votes

For angle theta with the point (15, -8) on its terminating side, what is the value of cosine?

A) -8/18
B) 15/17
C) -8
D) 15

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7 votes

Answer:

The answer is B.15/17

Mateuscb answered May 20, 2017

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1 vote

x^2 + y^2 = r^2
15^2 + (-8)^2 = [sqrt(17)]^2
r= 17

cos(theta) = x/r = 15/17
Letter B

Aska answered May 22, 2017

by Aska

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