If $x>0, y>0,x+y=\frac{\pi}{3}$ then maximum value of $\tan x\tan y$
121362
If $A,B>0$ and $A+B = \frac{\pi}{3},$ Then find Maximum value of $\tan A\cdot \tan B$.
7966
How prove $ \sqrt{2}+\sqrt{3}>\pi$?
114844
Global maxima/minima of $f(x,y,z) = x+y+z$ in $A$
52018
Can $\frac{\sqrt{3}}{\sin20^{\circ}}-\frac{1}{\cos20^{\circ}}$ have two values?
53748
Find maximum value of $\int_{0}^{1}\left(f(x)\right)^3dx$
146266
Find the maximum value of the expression ${\frac {x}{1+x^2}} + {\frac {y}{1+y^2}}+{\frac {z}{1+z^2}}$.
73786
Limit of $\frac{\sin(x+y)}{x+y}$ as $(x,y) \to (0,0)$
87907
How to find the maximum and minimum value of $\left|(z_1-z_2)^2 + (z_2-z_3)^2 + (z_3-z_1)^2\right|$ (where $|z_1|=|z_2|=|z_3|=1$)?
64860
Evaluation of $\lim\limits_{x\rightarrow0} \frac{\tan(x)-x}{x^3}$
56796
Maximum of $x^3+y^3+z^3$ with $x+y+z=3$
127032
Maximum of $\cos \alpha_{1}\cdot \cos \alpha_{2}\cdot \cos \alpha_{3}....\cos \alpha_{n}.$
17769
Show that $\frac{\sin x}{\cos 3x}+\frac{\sin 3x}{\cos 9x}+\frac{\sin 9x}{\cos 27x} = \frac{1}{2}\left(\tan 27x-\tan x\right)$
97827
maximum value of int
123920
How prove this inequality $\tan{(\sin{x})}>\sin{(\tan{x})}$
123997
Finding an expression for $\tan (a+ b + y)$ which involves only $\tan a, \tan b,$ and $\tan y$.
82170
Solve $x = \frac{1}{2}\tan(x)$
81537
Limit: $\lim_{x\to 0}\frac{\tan3x}{\sin2x}$