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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

`1/65`

B

`63/65`

C

`64/65`

D

`2/65`

Text Solution

Verified by Experts

The correct Answer is:
C
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