Posted by **Kate** on Friday, July 15, 2011 at 4:47pm.

Determine the exact value of:

sin30° + cos225° + sin150° + cos330°

## Answer this Question

## Related Questions

- math - Angles x and y are located in the first quadrant such that sinx=3/5 and ...
- Math- Trig - 1. Determine the exact value of cos^-1 (pi/2). Give number and ...
- advanced functions - Angles x and y are located in the first quadrant such that...
- advanced functions - Angle a lies in the second quadrant and sina=7/25. a) ...
- math - determine the exact value of (cot pi/3) + (csc pi/3) / (cos pi/4). how is...
- math - An initial-value problem is given by the differential equation, f(x,y) = ...
- trig - Angle x is in the second quadrant and angle y is in the first quadrant ...
- trig - Angle x is in the second quadrant and angle y is in the first quadrant ...
- Trignometry questions EASY HELP - 1. Which is a solution to the equation below? ...
- Math - Use a half angle formula to determine the exact value of sin 7(pi)/12.