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If cos alpha + 2 cos beta + 3 cos gamma ...

If `cos alpha + 2 cos beta + 3 cos gamma = 0 , sin alpha + 2 sin beta + 3 sin gamma = 0` and `alpha + beta + gamma = pi` , then `sin 3 alpha + 8 sin 3 beta + 27 sin 3 gamma` =

A

9

B

`-18`

C

0

D

3

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KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2012-MATHEMATICS
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