Math, asked by kynsairyntathiag707, 8 months ago

cos 3×30=4cos3×30 _ 3×cos30

Answers

Answered by dilliprasaddhakal528

0

Formula: cos3A = 4cos^3A - 3 cosA

LHS = cos 3 ×30

= 4 cos^3×30 - 3 cos30

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