The value of alpha such that sin^(-1)(2/...

The value of `alpha` such that `sin^(-1)(2/sqrt(5)),sin^(-1)(3/sqrt(10)),sin^(-1)alpha` are the angles of a triangle is

A

` (-1)/sqrt2`

B

`1/2`

C

`1/sqrt3`

D

`1/sqrt2`

Verified by Experts

The correct Answer is:

D

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