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C2 trig help please Watch

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    Could someone help me work this out?
    i don't know what to do after sin/cos =2 sin
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    (Original post by 0utdoorz)
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    Could someone help me work this out?
    i don't know what to do after sin/cos =2 sin
    If you had  \dfrac{x}{y} = 2x
    what would you do to find y?

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    you would first multiply by y to cancel out the denominator on the LHS
     x = 2xy
    Then you would divide through by x leaving
     1 = 2y
    and \dfrac{1}{2} = y
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    (Original post by 0utdoorz)
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    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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