1.

Prove that sin^(2)52 1/2-sin^(2)22 1/2.

Answer»

`(SQRT(3)+1)/(4sqrt(2))`
`(sqrt(3)-1)/(4sqrt(2))`
`(3+sqrt(3))/(4sqrt(2))`
`(3-sqrt(3))/(4sqrt(2))`

ANSWER :A


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