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a) Find all solutions fortan(x)=-3. b) Ifsin(x)=1/3and,sec(y) = 5/4 where0 x /2and 0 y /2,evaluate the expressioncos(x+y).

Find all solutions fortan(x)=-3.

Ifsin(x)=1/3and,sec(y) = 5/4 where0 x /2and 0 y /2,evaluate the expressioncos(x+y).

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