Question

If cos A +cos square A =1 then sin square A +sin ^4 A=

Answer 1

Answer:

1

Step-by-step explanation:

cosα+cos²α=1

∵cos²α=1-sin²α

⇒cosα+1-sin²α=1

∴sin²α=coα        .........................1

sin²α+sin^4α

⇒sin²α+(sin²α)²                               now  putting 1 in this

sin²α+cos²α

1