Simplify sec(90)
Problem
Solution
Identify the definition of the secant function in terms of the cosine function.
Substitute the given angle into the definition.
Evaluate the cosine of
90 using the unit circle or trigonometric values.
Determine the value of the expression by substituting the result back into the fraction.
Conclude that since division by zero is not defined, the expression is undefined.
Final Answer
Want more problems? Check here!