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cos(a-a), cosa,cos(a-b) are in hp then cosa.cosb/2=

cos(a-a), cosa,cos(a-b) are in hp then cosa.cosb/2=

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
Dear student

There is an error in question kindly check

First term must be cos ( b-a)

As it is not getting simplified beyond a certain point

Regards

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