Question

How do I find the value of the trig function? Number 1

Answer 1

From the trigonometric identities, we know that

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

From the given triangle, we can see that

$\cos \theta=\frac{15}{17}$

then,

$\sec \theta=\frac{1}{\frac{15}{17}}$

so, the answer is

$\sec \theta=\frac{17}{15}$