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Popular >

1/2 cos((3pi)/4)

Solution

\frac{1}{2} cos (\frac{3 π}{4})

Solution

- \frac{2}{4}

+1

Solution steps

\frac{1}{2} cos (\frac{3 π}{4})

Use the following trivial identity:

cos (\frac{3 π}{4}) = - \frac{2}{2}

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

Simplify

\frac{1}{2} (- \frac{2}{2}) : - \frac{2}{4}

= - \frac{2}{4}

Popular Examples

arctan(((sqrt(3))/2)/(-1/2))

arctan (\frac{\frac{3}{2}}{- \frac{1}{2}})

tan(pi/4-0.2)-tan(pi/4)

tan (\frac{π}{4} - 0.2) - tan (\frac{π}{4})

tan(arccos(20/29))

tan (arccos (\frac{20}{29}))

9.8 \cdot sin (6 0^{\circ})

cos(2arcsin((sqrt(3))/2))

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

Frequently Asked Questions (FAQ)

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