2010014903 | math4u.vsb.cz

SubArea:

Trigonometric equations and inequalities

Level:

Project ID:

2010014903

Source Problem:

Accepted:

0

Clonable:

1

Easy:

0

The solution set of the inequality

\cos x < - \frac{\sqrt{3}}{2}

for

x \in R

is:

⋃_{k \in Z} (\frac{5 π}{6} + 2 k π; \frac{7 π}{6} + 2 k π)

⋃_{k \in Z} (\frac{5 π}{6} + k π; \frac{7 π}{6} + k π)

⋃_{k \in Z} (\frac{5 π}{6} + 2 k π; \frac{11 π}{6} + 2 k π)

⋃_{k \in Z} (- \frac{5 π}{6} + 2 k π; \frac{5 π}{6} + 2 k π)