Posted by **lan** on Sunday, May 8, 2011 at 9:56am.

use a half angle formula to find the exact value of cos 75 degree

## Answer This Question

## Related Questions

- trig - Use a half-angle formula to find the exact value of cos 5ð/12
- Trig - If cosx = 10/19 an pi < x < 2pi, find the exact value of cos x/2 ...
- Trig - Use the half angle formula to find the exact value of tan 7 pie/8
- MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...
- Mathmatics - a. Use the formulas for lowering powers to rewrite the expression ...
- Please help Math - a. Use the formulas for lowering powers to rewrite the ...
- trig - Find the exact value by using a half-angle identity. cos 22.5 degrees
- Trig - How do i find the exact value of sin 15 using the half angle formula
- Trigonometry - use the appropriate trig identity (sum and difference, half angle...
- Trig - Use the half-angle formulas to come up with an exact expression for each ...

More Related Questions