How do you evaluate ${sec}^{- 1} (- 1)$ $sec^-1(-1)$ ?

Question

How do you evaluate ${sec}^{- 1} (- 1)$ $sec^-1(-1)$ ?

1 Answer

Impact of this question

20420 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-05-02T13:26:42

$π$ $pi$

Explanation:

You are looking for an angle, $θ$ $theta$ , whose secant is -1.
Since $sec x = \frac{1}{cos x}$ $secx = 1/cosx$ , this is the same as looking for an angle whose cosine is -1.

This is one of the standard angles, which one should have memorized. The inverse cosine provides values between 0 and $π$ $pi$ only.

The exact value is $π$ $pi$ radians or 180 degrees.

Science

Math

Humanities

... and beyond

How do you evaluate ${sec}^{- 1} (- 1)$ $sec^-1(-1)$ ?

1 Answer

Explanation:

Related questions

Impact of this question

Science

Math

Humanities

... and beyond

How do you evaluate sec−1(−1)sec^-1(-1)?

1 Answer

Explanation:

Related questions

Impact of this question

How do you evaluate ${sec}^{- 1} (- 1)$ $sec^-1(-1)$ ?