Question

The point (3,-4) is on the terminal side of an angle 0. What is cos O?

A.-3/5
B.3/5
C.3/4
D.-3/4
E.3

Answer 1

It think it is E 3 I’m sure thought don’t take me for granted use a special calculator

Answer 2

9514 1404 393

Answer:

B. 3/5

Explanation:

The distance from the origin to the point is given by the distance formula:

d = √((x -0)² +(y -0)²) = √(3² +(-4)²) = √25 = 5

The cosine of the angle is the ratio of x-coordinate to that distance:

cos(θ) = 3/5