Thread: Trigonometric functions

I have absolutely no idea what to do here. Please help.
for -180˚ ≤ Ө ≤ 180˚, solve

1) tan^2 3Ө= 1

for 0˚ ≤ Ө ≤ 360˚, solve

2) 2sin^2 Ө = cos3Ө

thanks Ө= theta

Originally Posted by lra11

I have absolutely no idea what to do here. Please help.
for -180˚ ≤ Ө ≤ 180˚, solve

1) tan^2 3Ө= 1

...

...

...and now you can easily calculate