Question

sec pi/4?

Answer 1

What is the cosine of pi/4?

Answer 2

\[\sec \left( \frac{ \pi }{ 4 } \right)=\frac{ 1 }{ \cos \left( \frac{ \pi }{ 4 } \right) }=\frac{ 1 }{ \frac{ \sqrt2 }{ 2 }}=\frac{ 2 }{ \sqrt2 }\]

Answer 3

give the exact value (if defined) of the following angles: csc 270 degrees, sec pi/4, tan 7pi/6