Question

Find all solutions of the following equation. sin x cos x - 2 sin x = 0

Answer 1

sin x cos x - 2 sin x = 0
factor out it, get
sin x (cos x - 2) = 0
set up each factor be equal zero then solve for x

sin x = 0
x = .... ?

cosx - 2 = 0
cos x = 2
there is no solution for x

Answer 2

how did you get to sin x (cosx-2)? what happened to the -2 sin x?

Answer 3

He factorized it.

For example,\[xy - 2y = y(x - 2)\]

Answer 4

okay, so if sin x = 0, wouldn't x be equal to 0pie and pie?

Answer 5

lol pi*