$$$\operatorname{atan}{\left(-1 \right)}$$$
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Your Input
Find $$$\operatorname{atan}{\left(-1 \right)}$$$.
Answer
$$$\operatorname{atan}{\left(-1 \right)} = - \frac{\pi}{4}\approx -0.785398163397448$$$A
$$$\operatorname{atan}{\left(-1 \right)} = -45^{\circ}$$$A
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