What is the value of cot(-60) ?

The value of cot(-60) is -(sqrt(3))/3

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cot(-60)

cot (- 6 0^{\circ})

- \frac{3}{3}

Decimal Notation

- 0.57735 \dots

Solution steps

cot (- 6 0^{\circ})

Use the following property:

cot (- x) = - cot (x)

cot (- 6 0^{\circ}) = - cot (6 0^{\circ})

= - cot (6 0^{\circ})

Use the following trivial identity:

cot (6 0^{\circ}) = \frac{3}{3}

cot (6 0^{\circ})

cot (x)

periodicity table with

18 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} cot (x) \mp \infty 31 \frac{3}{3} 0 - \frac{3}{3} - 1 - 3

= \frac{3}{3}

= - \frac{3}{3}

cos (2 arcsin (\frac{3}{5}))

tan (- 33 0^{\circ})

arctan (e^{0})

tan (4 π)

arccos (- \frac{4}{5})