Homework Help: Trig

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

Algebra - I had to solve 2x^2-x-1 using the quad. formula. I got it down to (1...
Trig - 4tan^2u-1=tan^2u 3tan^2u=1 tan^2u=1/3 sq. root of (tan^2u)=sq. root of (1...
Trig. - Can you please review this to see if I did this right? 2cos^2x+3cosx=0 ...
Algebra - I had to solve the function g of f where f is x^2+1 and g is sq. root ...
Algebra - Can you explain how to find the solution of 3x^2-2x+5, using the ...
Roots and Pre-cal - Find the roots of the function f(x)= x^2 +2x+2 a)-1 + sq ...
Trig. - 2sin^2x-3sinx=-1 sin^2x-3sinx=-1/2 times -3 sq. root of (sin^2x)+sinx= ...
Math - 1) Solve equation 3r+5 _____ + 2 = 2r to find the value of r? 2 A. 2 1/7 ...
Calculus I - Find the derivative ** (sq root) y = (square root) x + (2nd sq root...
Trig. - sec^2xcotx-cotx=tanx (1/cos)^2 times (1/tan)-(1/tan)=tan (1/cos^2) times...

For Further Reading

First Name:
School Subject:
Answer: