Question

solve for:

2 sinx - sin 2x = 0

Answer 1

sin 2x = 2sinx cosx


2sinx - 2sinx cosx = 0


2sinx (1 - cosx) =0

Answer 2

so u have Two cases

Answer 3

2sinx =0 ------>1

1-cosx =0 ------>2

Answer 4

just solve !!.... hope this helps u

Answer 5

how did you get the "cos x" out of 2 sin x?

Answer 6

just take the common term outside.... distributive law

Answer 7

no mean, on the first line you have :
sin 2x = 2sinx cosx

where did that cos x come from :s

Answer 8

it is just a formula

Answer 9

ow oke, thnx :D