Question

If cos A + cos² A = 1 then (sin² A + sin⁴ A) =​

Answer 1

Answer:

Answer:

Step-by-step explanation:cosA+ cos²A=1

CosA=1-cos²A

CosA=sin²A. [Therefore 1-cos²A=sin²A]

So ,

=Sin²A+sin⁴A

=Sin²A(1+sin²A).

=CosA(1+cosA). [therefore sin²A=cosA]

CosA+cos²A. [Therefore cos²A+cosA=1]