Show all steps to obtain full marks. 1. State the 6 trigonometric ratios (fractions) for the angle created by the point (-3, -7). Ensure that you include the triangle used to determine the ratios. No decimal answers. (8 marks) 2. Determine all of the angles in a triangle with side lengths 27 cm, 21 cm, and 18 cm. Round your answers to the nearest degree. (5 marks) 3. Prove the trigonometric identity: (3 marks) 1 + cot- a = esca