How would you calculate the Tangent without a calculator?
56151
Mental estimate for tangent of an angle (from $0$ to $90$ degrees)
105280
How to find the equation of a parabola given the tangent equations to two points?
100777
Finding the derivatives of sin(x) and cos(x)
22313
How should I calculate the $n$th derivative of $f(x)=x^x$?
76058
How can you number equations manually?
125537
Find the equations of the tangent line(s) that are parallel to the line $y= -4x +3$
87733
Calculate the Gauss integral without squaring it first
95739
Sum of tangent functions where arguments are in specific arithmetic series
154231
Solving trigonometric equations without a calculator or tables
104206
How to find the nth derivative?
101434
To find tangents to given circle from a point outside it
85425
Is there any simple method to calculate $\sqrt x$ without using logarithm
30246
Find the equation of the tangent plane to the surface $x^{\frac{2}{3}}+y^{\frac{2}{3}}+z^{\frac{2}{3}}=2^{\frac{2}{3}}$ at $(x_0,y_0,z_0)$
71128
Is the tangent function (like in trig) and tangent lines the same?
107812
Script access to tangent and bitangent, per face: how?
29759
Calculating pi manually
114623
Finding the tangent to a piecewise function