Question

if cos A + cos^2 A =1 then sin^2A +sin^4 A =?

Answer 1

ANSWER

cosA+cos ^2 A=1

cosA=1−cos ^2 A

cosA=sin ^ A

Hence sin^4 A+sin^2 A

cos 2^A+cosA=1

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Answer 2

Answer:

if cosA+cos^2A=1 then sin^2A+sin^4A=?

-:cosA+cos^A=1

cosA=1-cos^A

cosA=son^A

hence

sin^4+sin^A

cos^A+cosA=1