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If alpha + beta = 90^@ and alpha: beta =...

If `alpha + beta = 90^@ and alpha: beta = 2: 1`, then the value of `sin alpha : sin beta` is

A

`1 :1 `

B

` sqrt(2) :1`

C

`sqrt(3):1`

D

`2:1`

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The correct Answer is:
C
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