Inverse Sine and Cosine

Question Group #1
Directions and/or Common Information: Find the measure of each angle to the nearest degree.
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Question Group #2
Directions and/or Common Information: Solve the following word problems.
 If a 15' ladder is leaned up against a building so that the bottom of the ladder is 10' from the base of the building, what angle does the ladder make with the ground?
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 If a 50' tall tree breaks 10' from the ground and falls over (see picture) what angle does the top of the tree make with the ground?
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 How far from the stump is the top of the tree?
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 Johnny has a 6 foot piece of plywood to use to make a bicycle ramp. If he places the end of the ramp on a pile of blocks that is 2 feet high, what angle does the other end of the ramp make with the ground?
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 If the middle support of a 10' long see-saw is 3 feet off of the ground, what angle does the see-saw make with the support when one of the riders allows the end to hit the ground.
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