What is the value of arctan(-1)+2pi ?

The value of arctan(-1)+2pi is -pi/4+2pi

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arctan(-1)+2pi

arctan (- 1) + 2 π

- \frac{π}{4} + 2 π

Decimal Notation

315

Solution steps

arctan (- 1) + 2 π

Rewrite using trig identities:

arctan (- 1) = - \frac{π}{4}

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}

= - \frac{π}{4} + 2 π

\frac{( 4.33 ) ^{2} sin ^{2} ( 2 5 ^{\circ} )}{2 ( 9.8 )}

sin (1) + sin (2)

cos (4 0^{\circ}) cos (5 0^{\circ}) - sin (4 0^{\circ}) sin (5 0^{\circ})

\frac{5}{sin ( 2 5 ^{\circ} )}

cos (- i)