Use a calculator to evaluate the function. Round your answers to four decimal places. (Be sure the calculator is in the correct angle mode.)
$\sec 41.3 ^ { \circ }$
A) $- 1.1156$
B) $0.7513$
C) $1.3311$
D) $- 0.7671$
E) $0.8785$

Question

Quizplus · Accepted Answer

The secant function is the reciprocal of the cosine function. To find $\sec(41.3^\circ)$, first find $\cos(41.3^\circ)$ and then take its reciprocal. Using a calculator in degree mode, $\cos(41.3^\circ) \approx 0.7513$, so $\sec(41.3^\circ) = \frac{1}{\cos(41.3^\circ)} \approx \frac{1}{0.7513} \approx 1.3311$.

Use a Calculator to Evaluate the Function sec⁡41.3∘\sec 41.3 ^ { \circ }sec41.3∘

Use a Calculator to Evaluate the Function $\sec 41.3 ^ { \circ }$