Can anyone help me solve these two problems

sin2x-1=0

2sinx cox-1=0 Then I am not sure how to proceed

sinxtanx-sinx=0

sinx (sinx/cosx)- sinx

Sinx^2/ cosx -sinxcosx/cosx I am not sure if I am doing this right?(Thinking)

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- Mar 1st 2011, 04:22 PMhomeylova223Solving trigonometric equations?
Can anyone help me solve these two problems

sin2x-1=0

2sinx cox-1=0 Then I am not sure how to proceed

sinxtanx-sinx=0

sinx (sinx/cosx)- sinx

Sinx^2/ cosx -sinxcosx/cosx I am not sure if I am doing this right?(Thinking) - Mar 1st 2011, 04:40 PMe^(i*pi)
It's easier not to expand.

Add 1 to both sides:

Take the arcsin of both sides:

- Mar 1st 2011, 06:10 PMhomeylova223
Thanks for your help however the second function I am still having problem solving.

I narrowed it down to

sinx^2-sinx=0 factor sin

sinx(sinx-1)=0

sinx=0 sinx=1

x=0, 90,180,270,360 degrees? - Mar 1st 2011, 06:18 PMtopsquark