trig
use the unit circle to find the exact value for all the trig functions of è=2ð/3.
asked by
Anonymous

I do not understand your notation, è=2ð/3.
Do you mean theta = 2 pi/3?
The sine of 2 pi/3 is the same as the sine of pi/3, which is (sqrt3)/2
The cosine of 2 pi/3 has the same absolute value as cos pi/3 (1/2), but has opposite signposted by drwls
Respond to this Question
Similar Questions

precal
can anyone help me with this question. Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trig functions of t, whenever possible. (a) pi (b) 6pi 
trig
Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t whenever possible. 2pi 3pi/4 5pi/6 Three questions. I think those are supposed to be 
Trig
find the exact values of the six trig functions of angle... sin(315degrees) how do i do this? 
trig
find the exact values of the six trig functions of theta equals six pi divided by 8 
trig
If cos 0 =  1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0. 
trig
Find the exact value of the trigonometric function: sec(pi/12) I am not sure how to answer this off the unit circle. 
trig
Let be an angle in standard position and the point (a, b) be the point of intersection of the terminal side of with the unit circle. State the unit circle definitions of the six trigonometric functions. cos = sec = sin = 
Trig
Does anybody know a good website that will help me with finding the six trig functions of a point NOT on the unit cricle? 
Trig
Solve: 3tan^2x1=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 
trig
Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.