The roots of transcendent equation $\tan(x)=x$
12442
Solution of tanx = x?
84730
use the fact that $\tan 2x=\sin2x \ /\cos2x$ to prove that $\tan 2x=2\tan x/(1-\tan^2x)$
87713
How to propagate uncertainty to $\tan(x)$?
40107
primitive n-th roots of unity
85383
No. Of real roots of an equation
2491
For $0 < x < \pi/2 $, prove that $x + \frac{x^{3}}{3} <\tan x $
109304
The roots of the equation $z^n=(1+z)^n$...
126445
Proving the second root of a quadratic equation
147837
Find the parameter values satisfying conditions for all roots of an equation
45227
If $\sin \theta+\cos\theta+\tan\theta+\cot\theta+\sec\theta+\csc\theta=7$, then $\sin 2\theta$ is a root of $x^2 -44x +36=0$ My own bonafide attempt.
83692
Finding the interval where a solution is certain to exist for the equation $y' + (\tan t)y = \sin t$
155245
root of an odd degree polynomial
153480
Roots of a characteristic equation. Can Mathematica solve it?
52413
Show that $\tan{(\pi/7)} \tan{(2\pi/7)}\tan{(3\pi/7)}=\sqrt{7}$
11664
If $a_0+\frac{a_1}{2}+\dots + \frac{a_n}{n+1}=0$ then $a_nx^n+\dots + a_0$ has a root in $[0,1]$
11059
Verify the identity: $\tan^{-1} x +\tan^{-1} (1/x) = \pi /2$
86583
Taylor Series of $\tan x$