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# c3 trig help!!! watch

2sin2x + cosx = 0 solve the equation for 0<x<360
2. 2sin2x = 4sincosx

Factorise the equation by taking a factor of cos out.
3. (Original post by insparato)
2sin2x = 4sincosx

Factorise the equation by taking a factor of cos out.
Sloppy. Do you really mean sin(cosx)?

2 sin(2x) = 4 sinx cosx.

Take a factor of cosx out.
4. No i didnt i missed the x out .

Yes very sloppy indeed .

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