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sin^(2)5+sin^(2)6^(@)+ . . . +sin^(2)84^...

`sin^(2)5+sin^(2)6^(@)+ . . . +sin^(2)84^(@)+sin^(2)85^(@)=?`

A

`39(1)/(2)`

B

`40(1)/(2)`

C

40

D

`39(1)/(sqrt(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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KIRAN PUBLICATION-TRIGONOMETRY -TYPE - II
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