If $\cos \theta = \dfrac{4}{5}$, then what is the value of $\sec \theta$?
A. $\dfrac{5}{3}$
B. $\dfrac{3}{5}$
C. $\dfrac{5}{4}$
D. $\dfrac{4}{5}$
Answer:C
If $\cos \theta = \dfrac{4}{5}$, then what is the value of $\sec \theta$?
A. $\dfrac{5}{3}$ B. $\dfrac{3}{5}$ C. $\dfrac{5}{4}$ D. $\dfrac{4}{5}$