HELP ASAPPPPP!!!!!! I really need it answered right now thank you so much

1. A child swings on a playground swing set. If the length of the swing is 2 m and the child swings through an angle of q, what is the exact arc length through which the child travels? 2. A bicycle tire revolves at 100 rpm (revolutions per minute). What is its angular velocity, in radians per second, rounded to two decimal places? vv 3. A 4-m ladder is leaning against a vertical wall such that the angle between the ground and the ladder is 7 . What is the exact height that the ladder reaches up the wall? v 4. Find the exact value of cos , cos 18 + sin , sin 18 . 5. Solve 2 cos2 x + 5cosx + 3 on the interval x E [0, 2x] V V