Question

How do I get the solutions of cosx - 2sinxcosx = 0

i broght it down to cosx - sin2a = 0 but im almost positive i cant seth those equal to zero any help would be appreciated.

Answer 1

cosx - 2sinxcosx = 0
take common farctor
cos x (1- 2 sin x ) = 0
right ?

Answer 2

so you would have two cases
cos x =0
or 1-2 sin x =0

Answer 3

when cos x =0 then what x values (angels )that make cos x =0 ?

Answer 4

the same with
1-2 sin x =0
sin x =0.5

Answer 5

wooow sometimes i just over think problems i feel soo disappointed :( but thanks for the help

Answer 6

haha np :)