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cos A =(3)/4 implies 32 sin""((A)/(2)) s...

`cos A =(3)/4 implies 32 sin""((A)/(2)) sin""((5A)/(2))= `

A

7

B

8

C

3

D

11

Text Solution

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The correct Answer is:
D
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  10. sin "" (pi)/(14) .sin "" (3pi)/(14).sin"" (5pi)/(14).sin""(7pi)/(14).s...

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