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Popular >

cos(-(3pi)/4)

Solution

cos (- \frac{3 π}{4})

Solution

- \frac{2}{2}

+1

Solution steps

cos (- \frac{3 π}{4})

Use the following property:

cos (- x) = cos (x)

cos (- \frac{3 π}{4}) = cos (\frac{3 π}{4})

= cos (\frac{3 π}{4})

Use the following trivial identity:

cos (\frac{3 π}{4}) = - \frac{2}{2}

= - \frac{2}{2}

Popular Examples

sin (- \frac{5 π}{6})

sin (3 7^{\circ})

sin (2 x) = 1

- sin (\frac{π}{3})

sin (θ) = 1

Frequently Asked Questions (FAQ)

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