What is the value of sin^2 25^(@) + sin^...

What is the value of `sin^2 25^(@) + sin^2 65^(@)` ?

A

1

B

0

C

`2 /sqrt3`

D

`sqrt3/2`

Verified by Experts

The correct Answer is:

A

`sin^2 25^@ +sin^2 65^@`
`65^@+25^@=90^@ " " {sin^2 a + sin^2 (90-alpha)=1`
`=sin^2 25^@ +sin^2 65^@`
`=1`

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