Question

Find the value of the given trigonometric function.

sec (-300

Answer 1

sec is inverse cosine so it is cosine 1/-300

Answer 2

or just use the sec function on your calculator

Answer 3

i have a t.i30

Answer 4

\[\sec \left( -\theta \right)=\sec \theta \]
\[\sec \left( -300 \right)=\sec 300\]
\[\sec 300=\sec \left( 360-60 \right)=\sec 60=\frac{ 1 }{ \cos 60 }=\frac{ 1 }{ \frac{ 1 }{ 2 }}=2 \]