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1. Could someone help me work this out?
i don't know what to do after sin/cos =2 sin
2. (Original post by 0utdoorz)

Could someone help me work this out?
i don't know what to do after sin/cos =2 sin
what would you do to find y?

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you would first multiply by to cancel out the denominator on the LHS

Then you would divide through by leaving

and
3. (Original post by 0utdoorz)

Could someone help me work this out?
i don't know what to do after sin/cos =2 sin
Multiply by cos theta , equate to zero and factorise.

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