Exercises

EXERCISE 1 Find the period of the function .

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EXERCISE 2

(a)

Evaluate (give the exact answer).

 

(b)

If and , find (give the exact answer).

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EXERCISE 3

From a 200-foot observation tower on the beach, a man sights a whale in difficulty. The angle of depression of the whale is . How far is the whale from the shoreline? 

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