Inverse trigonometric functions
Question: Use inverse trigonometric functions to find a solution to the equation cos(x)=0.6 in the interval 0 leq x leq 4pi. Then, use a graph to to find all other solutions to this equation on this interval.
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Question: On a sunny day, a building and its shadow form the sides of a right triangle. If the hypotenuse is 31 m long and the shadow is 20 m, how tall is the building? (Round to the nearest tenth.)
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