Question

Cos A + cos square is equal to 1 then find sin square A + sin squareA

Answer 1

if cos^2A+cosA=1

then sin^2A+sin^4A--------------1

cosA=1-cos^2A

cosA=sin^2A (sin^A+cos^2A=1)

on S.B.S

cos^2A=sin^4A

putting this in eq 1

sin^2A+cos^2A=1

1=1

Hence proved mark as brainliest