What is the value of arctan(2/(-2)) ?

The value of arctan(2/(-2)) is -pi/4

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arctan(2/(-2))

arctan (\frac{2}{- 2})

- \frac{π}{4}

Decimal Notation

- 45

Solution steps

arctan (\frac{2}{- 2})

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}

arccos (sin (\frac{5 π}{3}))

\frac{tan ( 2 0 ^{\circ} ) + tan ( 1 0 ^{\circ} )}{1 - tan ( 2 0 ^{\circ} ) tan ( 1 0 ^{\circ} )}

cos (2 \cdot 0)

tan (2 8^{\circ})

cos (π^{2})