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cos(t)>-1/4 inequation

A inequation with variable

The solution

You have entered [src]
cos(t) > -1/4
$$\cos{\left(t \right)} > - \frac{1}{4}$$
cos(t) > -1/4
Rapid solution 2 [src]
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[0, pi - atan\\/ 15 /) U (pi + atan\\/ 15 /, 2*pi)
$$y\ in\ \left[0, - \operatorname{atan}{\left(\sqrt{15} \right)} + \pi\right) \cup \left(\operatorname{atan}{\left(\sqrt{15} \right)} + \pi, 2 \pi\right)$$
y in Union(Interval.Ropen(0, pi - atan(sqrt(15))), Interval.open(atan(sqrt(15)) + pi, 2*pi))
Rapid solution [src]
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Or\And\0 <= t, t < pi - atan\\/ 15 //, And\t < 2*pi, pi + atan\\/ 15 / < t//
$$\left(0 \leq t \wedge t < - \operatorname{atan}{\left(\sqrt{15} \right)} + \pi\right) \vee \left(t < 2 \pi \wedge \operatorname{atan}{\left(\sqrt{15} \right)} + \pi < t\right)$$
((0 <= t)∧(t < pi - atan(sqrt(15))))∨((t < 2*pi)∧(pi + atan(sqrt(15)) < t))