Math, asked by sachinsuryavanshi19, 2 months ago

4) Prove that, cos⁶ + sin⁶ =1-3cos²+3cos⁴

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Answered by farhaanaarif84

1+ 3 ( cos² A - sin² A )² } /4 { since cos 2A = cos² A - sin² A). = { 1+ 3( cosA + sinA)² ( cosA - sinA)² }/4. = {1+ 3( 1 + 2sinA cosA) ( 1 - 2sinA ...

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4) Prove that, cos⁶ + sin⁶ =1-3cos²+3cos⁴​

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4) Prove that, cos⁶ + sin⁶ =1-3cos²+3cos⁴