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Single Variable Calculus

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Moderate

Tangent to an Inverse Tangent

SVCALC-XLQMG1

Solve

$$y = \tan { (\arctan { (-1)) } }$$

A

$-1$

B

$1$

C

$-\cfrac { \pi }{ 4 }$

D

$\cfrac { \pi }{ 4 }$

E

$\cfrac { \pi }{ 2 } $