Math, asked by Raunakkumarchoudhary, 1 year ago

the value of cos(30-x) - cos (30+x) is equal to

Answers

Answered by saipavan1pavan

0

cos(A-B)-cos(A+B)=cosA.cosB+sinA.sinB-(cosA.cosB-sinA.sinB)
=cosA.cosB+sinA.sinB - cosA.cosB+sinA.sinB
=2(sinA.sinB)

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