Question

find the exact value of $sec 0^circ$ in simplest form with a rational denominator.

Explanation:

Step1: Recall secant definition

$\sec\theta = \frac{1}{\cos\theta}$

Step2: Substitute $\theta=0^\circ$

$\sec 0^\circ = \frac{1}{\cos 0^\circ}$

Step3: Use $\cos 0^\circ = 1$

$\sec 0^\circ = \frac{1}{1}$

Step4: Simplify the fraction

$\sec 0^\circ = 1$

Answer:

1