Who wants to be my friend and what is 2-6+12-123+1232

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10