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Prove that sin^(2)5^(@) +sin^(2)10^(@) +...

Prove that `sin^(2)5^(@) +sin^(2)10^(@) + sin^(2)15^(@)+...+sin^(2)90^(@)=(19)/(2)`

A

7

B

`8 1//2`

C

`9 1//2`

D

`7 1//2`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-TRIGONOMERTIC RATIOS-PRACTICE EXERCISE
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