Evaluate the expression.
-$\sec 90 ^ { \circ }$
A) 0
B) $\frac { 2 \sqrt { 3 } } { 3 }$
C) 1
D) Undefinec

Name: Evaluate the expression. -$\sec 90 ^ { \circ }$ A) 0 B) $\frac { 2 \sqrt { 3 } } { 3 }$ C) 1 D) Undefinec
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Question

Quizplus · Accepted Answer

$\sec 90^\circ = \frac{1}{\cos 90^\circ}$. Since $\cos 90^\circ = 0$, $\sec 90^\circ$ is undefined because division by zero is undefined.

Evaluate the Expression sec⁡90∘\sec 90 ^ { \circ }sec90∘ A) 0 B)

Evaluate the Expression $\sec 90 ^ { \circ }$ A) 0
B)