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Chapter 7: Q. 77 (page 504)

In Problems $76 - 80$ , use a calculator to find an approximate value for each expression, rounded to two decimal places.
$\tan^{- 1} (- 2)$

Short Answer

Expert verified

The approximate value is $\tan^{- 1} (- 2) = - 1.11$

Step by step solution

01

Given information

Given expression $\tan^{- 1} (- 2)$

02

Use a calculator and calculate the value

Using a calculator, we get

$\tan^{- 1} (- 2) = - 1.11$

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Most popular questions from this chapter

Show that $\tan^{- 1} v + c o t^{- 1} v = \frac{π}{2}$

If $\tan α = x + 1$ and role="math" localid="1646425111199" $\tan β = x - 1,$ show that

role="math" localid="1646426027733" $2 c o t (α - b) = x^{2}$

Show that $\tan^{- 1} (\frac{1}{v}) = \frac{π}{2} - \tan^{- 1} v$ , if $v > 0$

Rewrite over a common denominator:

$\frac{\sin (θ) + \cos (θ)}{\cos (θ)} + \frac{\sin (θ) + \cos (θ)}{\sin (θ)}$

Establish each identity.

$\frac{1 + \cos θ + \sin θ}{1 + \cos θ - \sin θ} = s e c θ + \tan θ$

See all solutions

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