Find the Exact Value sec(450)
Problem
Solution
Identify the angle and its periodicity. Since the secant function has a period of
360 we can find a coterminal angle by subtracting360 from450
Rewrite the expression using the coterminal angle.
Apply the definition of the secant function in terms of the cosine function.
Evaluate the cosine of
90
Determine the value of the fraction. Since the denominator is zero, the expression is undefined.
Final Answer
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