Question

If cos θ = 7/25, use the Pythagorean Identity to find tan θ.

7/24
24/25
24/7
25/24
explain why please 

Answer 1

cos Ф = 7 /25

sin² Ф = 1 - cos² Ф = 1 - 49/625 = 576/625

sin Ф = 24/25

tan Ф = sin Ф / cos Ф = 24/25