Question

Find the value of sec(π/4) using the unit circle. Yea

Answer 1

We have to find the value of sec(π/4).

We start by using its equivalent expression:

`\sec(\pi\/4)=(1)/(\cos(\pi\/4))`

Using the unit circle we can find the value of cos(π/4) as:

Then, we can find sec(π/4) as:

`\sec(\pi\/4)=(1)/(\cos(\pi\/4))=(1)/((√(2))/(2))=(2)/(√(2))=√(2)`

Answer: √2 [Third option]