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Popular >

sqrt(4cos(pi))

Solution

4 cos (π)

Solution

2 i

Solution steps

4 cos (π)

Use the following trivial identity:

cos (π) = (- 1)

= 4 (- 1)

Simplify

4 (- 1) : 2 i

= 2 i

Popular Examples

arctan (0.853)

cos (4 5^{\circ}) \cdot 20

arcsin (0.314)

arcsin (0.317)

cos((13pi)/(36))cos(pi/9)+sin((13pi)/(36))sin(pi/9)

cos (\frac{13 π}{36}) cos (\frac{π}{9}) + sin (\frac{13 π}{36}) sin (\frac{π}{9})

Frequently Asked Questions (FAQ)

What is the value of sqrt(4cos(pi)) ?
The value of sqrt(4cos(pi)) is 2i