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Chapter 7: Q. 62 (page 451)

Find the exact solution of each equation:

2cos-1x=蟺.

Short Answer

Expert verified

The exact solution of the equation2cos-1x=蟺is{0}.

Step by step solution

01

Step 1. Given Information.

The trigonometric equation is,

2cos-1x=蟺.

02

Step 2. Finding the value.

The equation is,

2cos-1x=蟺

Dividing both sides by 2,

role="math" localid="1647536848995" 2cos-1x2=蟺2鈬�cos-1x=蟺2

The equation can be rewritten as,

x=cos蟺2

x=0

The solution set is{0}.

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