Math, asked by sandeshbankar2768, 4 months ago

If A = 30°, then Cos3A = 4Cos3A-3Cos A. Verify please give step by step please

Answers

Answered by shreyashisher

0

Answer:

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Step-by-step explanation:

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Answered by DARSHANHS

0

Answer:

cos3(30)=4cos3(30)-3cos(30)

cos90=4cos90-3cos30

0=4*0-1/

$\sqrt{2}$

$\sqrt{2}$

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