Can anyone help solve the below for 'a'
0=b(ycos(a)-bcos(2a)+xsin(a))
I've reduced it to
b=ycos(a)+2sin(a)sin(a)+xsin(a)
=sin(a)(cot(a)+2sin(a)+x)
Which I think is right, but I can't get any further without just ending up with different forms that appear more complex.