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Popular >

cos(2/3)pi

Solution

cos (\frac{2}{3}) π

Solution

2.46893 \dots

Solution steps

cos (\frac{2}{3}) π

Refine to a decimal form

= 2.46893 \dots

Popular Examples

sec^{2} (1.2) - 4

cos^2(pi/2)-sin^2(pi/2)

cos^{2} (\frac{π}{2}) - sin^{2} (\frac{π}{2})

cos^2((7pi)/8)-sin^2((7pi)/8)

cos^{2} (\frac{7 π}{8}) - sin^{2} (\frac{7 π}{8})

sin((11pi)/(20))cos(pi/5)+cos((11pi)/(20))sin(pi/5)

sin (\frac{11 π}{20}) cos (\frac{π}{5}) + cos (\frac{11 π}{20}) sin (\frac{π}{5})

cot(arccos(-5/6))

cot (arccos (- \frac{5}{6}))

Frequently Asked Questions (FAQ)

What is the value of cos(2/3)pi ?
The value of cos(2/3)pi is 2.46893…