Find the exact value of each expression.   a)  Cot-1(-√3)    b) arccos(-1/2)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 31E
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Find the exact value of each expression.

 

a)  Cot-1(-√3)    b) arccos(-1/2)

Expert Solution
Step 1

Range of Cot-1 is (0,π)

In this range, it will be negative in the 2nd quadrant. 

So,

Calculus homework question answer, step 1, image 1

 

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