1. Simplify. (4cos^(2)(Theta)+7cos(Theta)+3)/(cos^(2)(Theta)+2cos(Theta)+1)
2. Compute values of given function as indicated. Find in 165 degree by using 165 degree = 120 + 45
3. Determine excact value of expression cos (a+B), sin (a+B) and tan (a+B) under the given conditions. cos (a) = 15/17, a lies in quadrant IV, and sin (B) = -6/13, B lies in quadrant III
4.Simplify. sin((pi)/(12)) cos((7pi)/(12)) + cos((pi)/(12)) sin((7`)/(12))
5. Compute exact value of expression. cos(10°)cos(50°)-sin(10°)sin(50°)
6. Compute exact value of expression within interval (-pi/2 , pi/2) ---- tan^(-1)(-sqr3)