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cos^2(x)
En la desigualdad la incógnita

Solución

   2            
cos (x) < sin(x)
$$\cos^{2}{\left(x \right)} < \sin{\left(x \right)}$$
cos(x)^2 < sin(x)
Solución de la desigualdad en el gráfico
Respuesta rápida [src]
   /             /         ____________\      /         ____________\    \
   |             |  ___   /        ___ |      |  ___   /        ___ |    |
   |             |\/ 2 *\/  -1 + \/ 5  |      |\/ 2 *\/  -1 + \/ 5  |    |
And|x < pi - atan|---------------------|, atan|---------------------| < x|
   \             \          2          /      \          2          /    /
$$x < \pi - \operatorname{atan}{\left(\frac{\sqrt{2} \sqrt{-1 + \sqrt{5}}}{2} \right)} \wedge \operatorname{atan}{\left(\frac{\sqrt{2} \sqrt{-1 + \sqrt{5}}}{2} \right)} < x$$
(atan(sqrt(2)*sqrt(-1 + sqrt(5))/2) < x)∧(x < pi - atan(sqrt(2)*sqrt(-1 + sqrt(5))/2))
Respuesta rápida 2 [src]
     /         ____________\           /         ____________\ 
     |  ___   /        ___ |           |  ___   /        ___ | 
     |\/ 2 *\/  -1 + \/ 5  |           |\/ 2 *\/  -1 + \/ 5  | 
(atan|---------------------|, pi - atan|---------------------|)
     \          2          /           \          2          / 
$$x\ in\ \left(\operatorname{atan}{\left(\frac{\sqrt{2} \sqrt{-1 + \sqrt{5}}}{2} \right)}, \pi - \operatorname{atan}{\left(\frac{\sqrt{2} \sqrt{-1 + \sqrt{5}}}{2} \right)}\right)$$
x in Interval.open(atan(sqrt(2)*sqrt(-1 + sqrt(5))/2), pi - atan(sqrt(2)*sqrt(-1 + sqrt(5))/2))