sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......

`sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......+sin^(2)85^@ + sin^(2)90^@=`............ A) 7 B) 8 C) 9 D) `9(1)/(2)`

A

7

B

8

C

9

D

`9(1)/(2)`

Verified by Experts

The correct Answer is:

D

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