What is the value of arctan(1/(-1)) ?

The value of arctan(1/(-1)) is -pi/4

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arctan(1/(-1))

arctan (\frac{1}{- 1})

- \frac{π}{4}

Decimal Notation

- 45

Solution steps

arctan (\frac{1}{- 1})

Simplify

= arctan (- 1)

Use the following property:

arctan (- x) = - arctan (x)

arctan (- 1) = - arctan (1)

= - arctan (1)

Use the following trivial identity:

arctan (1) = \frac{π}{4}

arctan (1)

x 0 \frac{3}{3} 13 arctan (x) 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} arctan (x) 0^{\circ} 3 0^{\circ} 4 5^{\circ} 6 0^{\circ}

= \frac{π}{4}

= - \frac{π}{4}

arcsin (\frac{4}{6})

csc (arctan (\frac{3}{3}))

sin (3)

arctan (\frac{3}{6})

arcsin (0.2)