Math, asked by nishthachhajer6722, 10 months ago

Prove the trigonometry identity: cos4 − cos2 = sin4 − sin2

Answers

Answered by rajvirsingh0559

2

a2-b2=(a-b) (a+b)

cos2x + sin2= 1

sin4x -cos4x =(sin2x - cos2x) ( sin2x+ cos2x)

sin2x -cos2x

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