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Popular >

3*cos(pi/4)

Solution

3 \cdot cos (\frac{π}{4})

Solution

\frac{3 2}{2}

+1

Solution steps

3 cos (\frac{π}{4})

Use the following trivial identity:

cos (\frac{π}{4}) = \frac{2}{2}

= 3 \cdot \frac{2}{2}

Simplify

3 \cdot \frac{2}{2} : \frac{3 2}{2}

= \frac{3 2}{2}

Popular Examples

arccot (- 3)

sin (π) cos (π)

-sin((3pi)/4)+cos((3pi)/4)

- sin (\frac{3 π}{4}) + cos (\frac{3 π}{4})

(2*(cos(45))^2+3*csc(37))/(2tan(45))

\frac{2 \cdot ( cos ( 4 5 ^{\circ} ) ) ^{2} + 3 \cdot csc ( 3 7 ^{\circ} )}{2 tan ( 4 5 ^{\circ} )}

sin(arcsin(3/5)+arccos(-5/13))

sin (arcsin (\frac{3}{5}) + arccos (- \frac{5}{13}))

Frequently Asked Questions (FAQ)

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