Asked by Kiki

If sec A =5/4 and A is an angle in Quadrant IV, find the value of cos A.

A. -4/5
B.4/5
C.-5/4

Is it choice A
Answered by Damon
cos = 1/sec = 4/5

cos is positive in Quadrant 4, x is positive and hypotenuse is positive.
Answered by Kiki
Thank you
Answered by Damon
You are welcome.
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