A graph shows unit of (-1/2, -sqrt3/2) and the graph shows an angle theta drawn in standard position, where cos theta=-8/17. The following statements are made. Statement 1: The point on the end of the terminal arm is (-8,-9) Statement 2: The reference angle is 62 degrees Statement 3: Tan theta= -15/8 Statement 4: Sin theta=-15/17. The two true statements are a. 1 & 2 b. 3 & 4 c. 1 & 3 d. 2 & 4