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(cos^(3)21^(@)+cos^(3)39^(@))/(cos21^(@)...

`(cos^(3)21^(@)+cos^(3)39^(@))/(cos21^(@)+cos39^(@))=`

A

`3//2`

B

`2//3`

C

`3//4`

D

`4//3`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MULTIPLE & SUBMULTIPLE ANGLES-EXERCISE-II
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