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Chapter 6: Q. 21 (page 395)

In problems 11-26,use the fact that the trigonometric function are periodic to find the exact value of each expression. Do not use a calculator.

tan21蟺

Short Answer

Expert verified

The exact value is0.

Step by step solution

01

Step 1. Given information.

We have:

tan21蟺

02

Step 2. Find the exact value of trigonometric function.     

The function is tan21蟺.

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the second quadrant.

=-tan(0)=0

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