Math, asked by vedurupakapadma1983, 6 months ago

cos(A+B)-cos(A-B) is equal to

Answers

Answered by vyshnavi74

0

Answer:

cos (a+b)))))))))))))))))))))

Answered by deepakumar61

0

Answer:

we know ,

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

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

according to question

cosA.cosB - sinA.sinB -(cosA.cosB+sinA.sinB)

cosA.cosB - sinA.sinB - cosA.cosB-sinA.sinB

-sinA.sinB - sinA.sinB

-2sinA.sinB

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