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Find the value of sin^(2)5^(@)+ sin^(2)1...

Find the value of `sin^(2)5^(@)+ sin^(2)10^(@)+ sin^(2)15^(@)+* * * +sin^(2)90^(@)`.

A

`7 (1)/2`

B

`8(1)/2`

C

`10(1)/2`

D

`9 (1)/2`

Text Solution

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The correct Answer is:
D
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