Take the cosine of <math><mstyle displaystyle="true"><mo>-</mo><mfrac><mrow><mn>4</mn><mi>π</mi></mrow><mrow><mn>3</mn></mrow></mfrac></mstyle></math> .

Add full rotations of <math><mstyle displaystyle="true"><mn>2</mn><mi>π</mi></mstyle></math> until the angle is greater than or equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> and less than <math><mstyle displaystyle="true"><mn>2</mn><mi>π</mi></mstyle></math> .

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the second quadrant.

The exact value of <math><mstyle displaystyle="true"><mi>cos</mi><mrow><mo>(</mo><mfrac><mrow><mi>π</mi></mrow><mrow><mn>3</mn></mrow></mfrac><mo>)</mo></mrow></mstyle></math> is <math><mstyle displaystyle="true"><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mstyle></math> .

Do you know how to Find the Cosine of the Angle -(4pi)/3? If not, you can write to our math experts in our application. The best solution for your task you can find above on this page.

Name | four hundred sixty-eight million one hundred sixteen thousand six hundred twenty |
---|

- 468116620 has 32 divisors, whose sum is
**1285340400** - The reverse of 468116620 is
**026611864** - Previous prime number is
**59**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 34
- Digital Root 7

Name | one billion six hundred seventy-four million one hundred twenty-eight thousand fifteen |
---|

- 1674128015 has 32 divisors, whose sum is
**2349527040** - The reverse of 1674128015 is
**5108214761** - Previous prime number is
**47**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 35
- Digital Root 8

Name | one billion eighteen million nine hundred fifteen thousand six hundred forty-seven |
---|

- 1018915647 has 4 divisors, whose sum is
**1358554200** - The reverse of 1018915647 is
**7465198101** - Previous prime number is
**3**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 42
- Digital Root 6