Posted by Jillian on Friday, December 9, 2011 at 2:10pm.
Learn your standard angles in their various orientation around the circle.
0 pi/6 pi/4 pi/3 and pi/2 are important enough to memorize
In degrees, that's 0 30 45 60 90
240 = 180 + 60
so it's in the 3rd quadrant.
Use the functions of 60 degrees, except that sin and cos are both negative there.
Related Questions
Calculus - I wanted to confirm that I solved these problems correctly (we had to...
Math - 1. Let (-7, 4) be a point on the terminal side of (theta). Find the exact...
Algebra II - Multiple Choice Which expression is NOT equivalent to 1? (theta) ...
Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...
Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...
trigonometry - can you correct the rest for me please? Express each as a ...
trigonometry - can you correct the rest for me please? Express each as a ...
trigonomtry - can you correct the rest for me please? Express each as a function...
Algebra II - Which of the following expressions are not equal to 1? A) sin^2 ...
Trig - 1. Establish the identity: sin(theta+3pi/2)=-cos(theta) 2. Find the exact...
For Further Reading
