Posted by **Anonymous** on Monday, February 1, 2010 at 9:54pm.

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

- trig -
**drwls**, Monday, February 1, 2010 at 11:36pm
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 sign

## Answer This Question

## Related Questions

- precal - can anyone help me with this question. Let P be the point on the unit ...
- trig - Find the exact value of the trigonometric function: sec(-pi/12) I am not ...
- math - correction: use the unit circle to fin the ecaxtvalue for all trig ...
- trig - Let P be the point on the unit circle U that corresponds to t. Find the ...
- Trig - find the exact values of the six trig functions of angle... sin(-...
- Trig - Find the exact circular function value for: sec(23pi/6) I know the answer...
- trig - If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the ...
- trig - what is the exact value of 7pi for all trig func.?
- trig - find the exact values of the six trig functions of theta equals six pi ...
- trig - if (-12,5) is a pointon the terminal side of an angel 0 find the exact ...

More Related Questions