Hey,

I can't seem to do these 3 questions on my extension 1 assignment, hopefully sOmeone here can help.

Solve for x, 0 < or = x < or = 360 give answers to nearest minute.

1. 2cos(x+10)=-1

2. 3(tanx)^2-7tanx+4=0

3. Solve sin(2x-30)=sqrt[3]/2 for -180 < or = x < or = 180

I'm abit confused, any help appreciated.

Thanks,