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Chapter 9: Q. 4 (page 567)

$\tan^{- 1} (- 1) =_______$

Short Answer

Expert verified

$- \frac{π}{4}$

Step by step solution

01

Step 1. Given information

We have to find the value of $\tan^{- 1} (- 1)$

02

Step 2. Find the value

Let,

$θ = \tan^{- 1} (- 1)$

Rewrite the expression,

$\tan θ = - 1$

Therefore,

$θ = - \frac{π}{4}$

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