For Question 4 and 5 refer to the diagra...

For Question 4 and 5 refer to the diagram

A flagpole that stands on level ground. Two cables, r and s, are attached to the pole at a point 12 feet above the ground and form a right angle with each other. Cable r is attached to the ground to the ground at a point that makes tanx=0.75.
Q. What is the value of cosx?

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The diagram above shows a semicircular arch over a street that has a radius of 14 feet. A banner is attached to the arch at points A and B, such that AE=EB=5 feets. How many feet above the ground are these points of attachment for the banner, correct to the nearest tenth of a foot?

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