Find the Exact Value sec(90)
Problem
Solution
Identify the definition of the secant function in terms of the cosine function.
Evaluate the cosine of
90 using the unit circle or trigonometric tables.
Substitute the value of
cos(90) into the secant expression.
Determine the result of the division. Since division by zero is not defined in the real number system, the value does not exist.
Final Answer
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