If sin A=-7/25 and angle A terminates in Quadrant IV, cos A equals..

Question

A. -24/25
B. -7/24
C. 24/25
D. 7/24

PLEASE HELP

Answer 1

X^2 + Y^2 = 25^2, X^2 + (-7)^2 = 625, X^2 = 625-49 = 576, X = 24.

Cos A = x/r = 24/25.