Question

sinx=-2sinxcosx

help mee? :D

Answer 1

i know im not suppose to divide by sinx but idk how to do it otherwise

Answer 2

any ideas?

Answer 3

@TillyAsks

Answer 4

oh u already here :P

Answer 5

Okay
factor out sinx

Answer 6

what do u mean?

Answer 7

like sinx=sinx(-2cosx)

Answer 8

1+2cos x = 0

Answer 9

u divided by sinx? u cant do that though because sinx can be equal to 0

Answer 10

Gah this is complicated one see let me pen and paper it ..can use my brain

Answer 11

yea i did what u just did and got points off cuz aprently doing it this way will only get u half answers because sinx can be 0 :(

Answer 12

sinx = -2sinxcosx
sinx + 2sinxcosx = 0
sinx(1 + 2cosx) = 0
the zeroes is when each factor equals zero

sinx = 0
solve for x

and

1 + 2cosx = 0
solve for x

Answer 13

thank u i love u!

Answer 14

really, oh my good :*
haha

Answer 15

Ha Sorry :c