Help with Math word problem solving! Best answer gets 10 points!!?

1. Bob is driving along a straight and level road straight toward a mountain. At some point on his trip he measures the angle of elevation to the top of the mountain and finds it to be 21 degrees 31'. He then drives 1 mile (1 mile = 5280 ft) more and measures the angle of elevation to be 33 degrees 20'. Find the height of the mountain to the nearest foot.

a) 519655

b) 5197

c) 5297

d) 51966

2. At an altitude of 2800 feet, the engine on a small plane fails. What angle of glide is needed to reach an airport runway that is 3 miles away by land?

a) 11 degrees

b) 88.9 degrees

c) 10 degrees

d) 89.9 degrees

3. From a boat on the river below a dam, the angle of elevation to the top of the dam is 23 degrees 26'. If the dam is 2911 feet above the level of the river, how far is the boat from the base of the dam?

a) 6696 ft

b) 6686 ft

c) 6706 ft

d) 6716 ft

4. The position of a weight attached to a spring is s(t) = -9 cos 8pit inches after t seconds. What is the maximum height that the weight reaches above the equilibrium position and when does it first reach the maximum weight

a) the max height of 18 inches is first reached after 2 seconds

b) the max height of 9 inches is first reached after 0.13 seconds

c) the max height of 9 inches is first reached after 4 seconds

d) the max height of 18 inches is first reached after 4 seconds

best answer gets 10 points!!