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If cos alpha = (3)/(5) , cos beta =(5)/...

If ` cos alpha = (3)/(5) , cos beta =(5)/(13) , "then " cos^(2) ((alpha - beta )/(2))= `

A

`64//65`

B

`1//65`

C

`65//64`

D

65

Text Solution

Verified by Experts

The correct Answer is:
A
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