Math, asked by gudiwakajaisatya, 5 months ago

IF A=30 THEN 4 COS3A-3COSA

Answers

Answered by jaiswalaarushi38

2

Answer:

cos 3A=4cos 3 A-3cos A

A =30

L.H.S =cos(3*30) R.H.S =4cos^3(30) -3cos(30)

=0 =4*[3root3/8] -3root3/2

=3root3[1/2 - 1 /2]

=3root*0

=0//

accordingly L.H.S =R.H.S//

cos 3A=4cos 3 A-3cos A

Answered by HappyStudies

0

Answer:

................... Thank you

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