# How do you evaluate #sec^-1(2)#?

##### 1 Answer

Write your answer here...

Start with a one sentence answer

Then teach the underlying concepts

Don't copy without citing sources

preview

?

#### Answer

Write a one sentence answer...

#### Answer:

#### Explanation

Explain in detail...

#### Explanation:

I want someone to double check my answer

Bio
Share

Aug 13, 2016

#### Answer:

#### Explanation:

Let the answer be

Since

As secant is the reciprocal of the cosine function, i.e.

#1/cos(x) = 2#

Or

The range of

The range of

Since the ranges are similar, we can find

#x = cos^{-1}(1/2) = pi/3#

Was this helpful? Let the contributor know!

Describe your changes (optional) 200