Question

if cos,=7/8 find the value of 1-tan^2 a/1+tan^2 a​

Answer 1

Step-by-step explanation:

cos = 7/8 = B/H

tan = P/B

H2 = B2 + P2

64 = 49 + P2

P2 = 15

P = root 15

Tan = root 15/ 7

1 - 15/49/ 1 + 15 / 49

34/49/ 64/ 49

34/64 = 0.53