Posted by **Tara** on Thursday, January 7, 2010 at 6:47pm.

Solve: 3tan^2x-1=0. I got +/- (the sq. root of 3)/3 which is correct according to my study guide. However, I don't know how to use the unit circle to find this. The copy of the unit circle which I have does not have tangent values listed, only sine and cosine. I've tried googling unit circle with no avail. Would you be able to share with me what the tan values are for pi/6, pi/4 and pi/3? Thanks so much.

- Trig -
**Marth**, Thursday, January 7, 2010 at 6:50pm
tan(x) = sin(x) / cos(x)

## Answer This Question

## Related Questions

- Trig - 4tan^2u-1=tan^2u 3tan^2u=1 tan^2u=1/3 sq. root of (tan^2u)=sq. root of (1...
- Some Please Help me - PreCalc - Verify that the point ( square root(31)/7, -...
- Precalc/Trig 1 - What equation would you use to show that the point ((square ...
- trig - I have no idea how to solve this problem. <A is in standard position ...
- trig - use the unit circle to find the exact value for all the trig functions of...
- trig question - On a unit circle, sin x = square root 3 over 2, with center O. ...
- calculus-integration! - should i use substitution?? if yes how should should i ...
- trig question - NEW DIAGRAM: On a unit circle, sin x = square root 3 over 2, ...
- Algebra - Use the quadratic formula to solve the equation. Give exact answers: ...
- Math Trig - At what two points on the unit circle is the x-coordinate equal to ...

More Related Questions