The value of sin^(2)1^(@)+sin^(2)2^(@)+s...

The value of `sin^(2)1^(@)+sin^(2)2^(@)+sin^(2)3^(@)+....+sin^(2)88^(@)+sin^(2)89^(@)` is equal to

A

`(45)/(2)`

B

`(49)/(2)`

C

`(89)/(2)`

D

45

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