Find the identical 1 sin4 theta1 sin2 theta Solution11sin4

Find the identical 1 - sin^4 theta/1 + sin^2 theta

1)(1-sin⁴)/(1+sin²)

=(1²-(sin²)²)/(1+sin²)

=[(1-sin²)(1+sin²)]/(1+sin²)

=(1-sin²)

=cos²

Find the identical 1 - sin^4 theta/1 + sin^2 theta Solution1)(1-sin4)/(1+sin2) =(12-(sin2)2)/(1+sin2) =[(1-sin2)(1+sin2)]/(1+sin2) =(1-sin2) =cos2

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