Question

sin2x = -1 in radians from 0 to 2pie

Answer 1

Hi! Do you know the values for which sine is -1? That would be a start.

Answer 2

the original equation was sinx cosx = -1/2 and says solve from 0 to 2pie

Answer 3

After editing I got sin2x=-1

Answer 4

that is correct. do you know where sine is -1?

Answer 5

I don't..

Answer 6

do you know the graph of the sine function?

Answer 7

nope this is all the information i have to solve

Answer 8

hmm. I have idea how to take over.

Answer 9

A look at the unit circle always helps me in these situations.

Answer 10

all right, sin is -1 at 3pi/4 radians and -pi/2 radians

Answer 11

@nagode64 oh yeah... do you know the unit circle?

Answer 12

3π/4?

Answer 13

and -π/2 is not in the domain.

Answer 14

whoops... i thought -2pi to 2pi. sorry.

Answer 15

oh my... sorry 3pi/2. lol

Answer 16

I become really stupid in the presence of someone.

Answer 17

so the final answer would be 3pi/2 + npi?