i need help with my pre calculus assignment its about trigonometry thankyou

Solve the following problem in an inverse trigonometric function. (20pts) 1. Ms. Ramirez whose height is 5 ft, casts a shadow on the ground. Find the angle of elevation of the sun from the tip of the shadow if the shadow is 3 ft long. 2. A worker is being observed from a hot air balloon, positioned 20 ft above the ground. If the balloon if is 50 ft away from the farm, what is the angle of depression of the farm from the balloon? 3. Find the angle of elevation of the top of a 4m flagpole from a point on the ground 5m away from the base of the flagpole. 4. A tower, 28.4 feet high, must be secured with a guy wire anchored 5 feet from the base of the tower. What angle will the guy wire make with the ground