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If 2 sinalpha+3cosalpha=2, " then " 3 si...

If `2 sinalpha+3cosalpha=2, " then " 3 sinalpha-2cosalpha`= _________.

A

`pm3`

B

`pm2`

C

0

D

`pm2`

Text Solution

Verified by Experts

The correct Answer is:
B
Put `3sinalpha-2cosalpha=k`, square the two equations and add.
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