Question

solve the following equation , sin^2x-cos x=1\4​

Answer 1

Step-by-step explanation:

use identity sin^2x +cos^2x =1.

sin^2x =1-cos^2x

Eqn becomes: 1-c^2 -c -1/4 =0. ( cosx =c)

c^2 +c -3/4=0

4c^2 +4c -3 =0

on solving the eqn we get the ans