Posted by **BreAnne** on Friday, January 27, 2012 at 6:39pm.

What is cos(11pi/3)? Explain your thinking.

What is sin(13pi/4) ? Explain your thinking.

## Answer this Question

## Related Questions

- Trig/PreCalc - Teach me how to express 5sqrt3 - 5i in polar form please. I don't...
- Trigonometry - Checking my work - Find the sum of the three smallest positive ...
- trig - find exact value cos(13pi/15)cos(-pi/5)-sin(13pi/15)sin(-pi/5)
- TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
- Math - 3. find the four angles that define the fourth root of z1=1+ sqrt3*i z...
- trig - The expression 4 sin x cos x is equivalent to which of the following? (...
- Advance fuctions - write and that is equivalent to each of the following ...
- Advance fuctions - write and that is equivalent to each of the following ...
- trig - Give exact answers Sin(11pi/8) so this is sin(pi/4+pi/3) sin(pi/4)*cos(pi...
- trig - For each expression in column I, choose the expression from column II to ...