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Popular Trigonometry >

arccos(1/(-sqrt(2)))

Solution

arccos (\frac{1}{- 2})

Solution

\frac{3 π}{4}

+1

Decimal

135

Solution steps

arccos (\frac{1}{- 2})

Use the following trivial identity:

arccos (\frac{1}{- 2}) = \frac{3 π}{4}

arccos (\frac{1}{- 2})

x - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 arccos (x) π \frac{5 π}{6} \frac{3 π}{4} \frac{2 π}{3} \frac{π}{2} \frac{π}{3} \frac{π}{4} \frac{π}{6} 0 arccos (x) 18 0^{\circ} 15 0^{\circ} 13 5^{\circ} 12 0^{\circ} 9 0^{\circ} 6 0^{\circ} 4 5^{\circ} 3 0^{\circ} 0^{\circ}

= \frac{3 π}{4}

= \frac{3 π}{4}

Popular Examples

(sin^2(0/2))/((0/2)^2)

cos^2(30)-sin^2(135)+8sin(45)cos(135)

e^{cos(0)}sin^2(0)-e^{cos(0)}cos(0)

Frequently Asked Questions (FAQ)

What is the value of arccos(1/(-sqrt(2))) ?
The value of arccos(1/(-sqrt(2))) is (3pi)/4