5. In the right triangle ABC below, C is the right angle, and two sides are given. Find sine of the given angle. 6. Complete the identity below. B B C sin X COS X + COS 8 COS X sin x 7. Use the Law of Cosines to find the angle measurements to the nearest degrees of the triangle below. 10. Find the exact value of the expression below. Cos = =? 8. Plot the complex number -3 +6i. 9. Write the expression below as the cosine of an angle, knowing that the expression is the right side of the formula for cos(x - B) with particular value for a and B. cos(120) cos(45) + sin(120) sin(45) at A A 3t 4 6 11. Solve the following equation on the interval [0, 2]. 2sinx = sin x 12. Find the rectangular coordinates of a point whose polar coordinates are (3, -270).