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cost>0,3 inequation

A inequation with variable

The solution

You have entered [src]
cos(t) > 3/10
$$\cos{\left(t \right)} > \frac{3}{10}$$
cos(t) > 3/10
Rapid solution [src]
  /   /                /  ____\\     /                 /  ____\           \\
  |   |                |\/ 91 ||     |                 |\/ 91 |           ||
Or|And|0 <= t, t < atan|------||, And|t <= 2*pi, - atan|------| + 2*pi < t||
  \   \                \  3   //     \                 \  3   /           //
$$\left(0 \leq t \wedge t < \operatorname{atan}{\left(\frac{\sqrt{91}}{3} \right)}\right) \vee \left(t \leq 2 \pi \wedge - \operatorname{atan}{\left(\frac{\sqrt{91}}{3} \right)} + 2 \pi < t\right)$$
((0 <= t)∧(t < atan(sqrt(91)/3)))∨((t <= 2*pi)∧(-atan(sqrt(91)/3) + 2*pi < t))
Rapid solution 2 [src]
        /  ____\           /  ____\              
        |\/ 91 |           |\/ 91 |              
[0, atan|------|) U (- atan|------| + 2*pi, 2*pi]
        \  3   /           \  3   /              
$$x\ in\ \left[0, \operatorname{atan}{\left(\frac{\sqrt{91}}{3} \right)}\right) \cup \left(- \operatorname{atan}{\left(\frac{\sqrt{91}}{3} \right)} + 2 \pi, 2 \pi\right]$$
x in Union(Interval.Ropen(0, atan(sqrt(91)/3)), Interval.Lopen(-atan(sqrt(91)/3) + 2*pi, 2*pi))