Question

if cos theta+cos^2 theta=1 then find sin^2theta+sin^4 theta​

Answer 1

cos theta +cos^2theta =1

costheta = 1-cos^2theta

cos theta = sin^theta.....(1)

so ,

sin^2theta +sin^4theta.... (2)

put value of (1) in (2)

you will get sin^2theta +sin^4theta = 1

hope this helps

Answer 2

please see the attachment