Hi could you please help wit this this is trigonometric identities advanced functions grade 12

Knowledge and Understanding 1. Given a circle with an arc length of 15 cm and a radius of 10 cm, determine the measure of the unknown angle, 0, in radians, to the nearest tenth. [2] 2. Convert 110 to an equivalent exact radian measure. [1] 3. Determine if the following is an identity: sin 0 cot 0 = sec 0. [2] 4. Prove the following identities. State any restrictions. a) csc20 . tan20 = 1 + tan20 [3] b) sin + tan sin 20 1 + cos 0 2cos*0 [4] 5. Using co-related angle formulas, determine the exact value of cos ". 3 [3] Application 6. A motocycle engine idles at 1700 rpm (revolution per minute). Determine the angular velocity of the engine in: [4] a) degrees per second b) radians per second 7. Determine the exact value of the following: [3] sin - cos 18 s?" + cos - sin 18 8. Given: csc 0 = - -, i