General Solution (1 Viewer)

[wrxsti]

Can anybody help me with this question...
Find the General solution to Sin(2x) - sin(4x) = sin (3x)
Any help wud be appreciated... i dont even know how to begin

 

[bos1234]

u sure this is right??

there is a 4U trig identity which states:

sinA - sinB = 2sin({A-B}/2)cos({A+B}/2)

subbing in 2x for A and 4x for B

i get -2sin3xcosx which i can't simplify further?

some1 else might know