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3 years ago

BRAINLIEST ASAP! PLEASE HELP ME :)

Mathematics

2 answers:

tankabanditka [31]3 years ago

5 0

Answer:

sin⁴x - sin²x

sin²x(sin²x - 1)

(1 - cos²x)(1 - cos²x - 1)

(1 - cos²x)(-cos²x)

cos⁴x - cos²x = RHS

Andrews [41]3 years ago

3 0

Step-by-step explanation:

Using cos ^2x+sin^2 x = 1

RHS = cos ^2x+sin^2 x = 1

Therefore,

LHS = cos ^2 x − cos ^4 x

= cos ^2 x ( 1 − cos ^2 x )

= cos ^2 x sin ^2 x

= ( 1 − sin ^2 x ) sin ^2 x

= sin ^2 x − sin ^4 x

= RHS

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