Math, asked by Jinesh6658, 8 months ago

Cos⁴ a - sin⁴a is equal to

Answers

Answered by aryan1234243
0

Step-by-step explanation:

cos²a-sin²a) (cos²a+sin²ap

1-2sin²ax1

1-2sin²a=0

2sin²a=1

sina=1/root2

thetha will be 45 degree ok

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