Please help me! My brain is bit at the stupid range so...yeah. :( Please? With a cherry on top?
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If it is supposed to be equal to zero, you can solve it this way:
4sinxcosx + 2 sinx = 0
Factor 2 sinx:
2 sinx * (2cosx+1) = 0
So you can easily get either of them equal to zero:
sinx=0
2cosx+1=0
now you need to solve for x, you have to check in which angles the x of sinx is equal to zero.
and for which angles of x your cosx is equal to -1/2
I leave the final results of angles to you which you can find easily by calculator using arcsin and arccos.
Piece of cake :)
4sinxcosx + 2 sinx = 0
Factor 2 sinx:
2 sinx * (2cosx+1) = 0
So you can easily get either of them equal to zero:
sinx=0
2cosx+1=0
now you need to solve for x, you have to check in which angles the x of sinx is equal to zero.
and for which angles of x your cosx is equal to -1/2
I leave the final results of angles to you which you can find easily by calculator using arcsin and arccos.
Piece of cake :)