Finding formula of all solution of a point P, where two tangent line to an ellipse from P is perpendicular to each other
71074
The locus of the intersection point of two perpendicular tangents to a given ellipse
125537
Find the equations of the tangent line(s) that are parallel to the line $y= -4x +3$
114162
Draw a Line Between Two Points described by Trigonometric Calculations
12014
Solving a multi-variable trig sum to find the max separation btwn 2 ellipses
11875
how to calculate the bounding square of an ellipse?
63802
Parametric Equation of a Circle Using a Line
148963
The Ellipse Problem - finding an ellipse inside a triangle
147113
How to solve $2 \tan x / (1 - (\tan x)^2) = (\sin 2x)^2$?
102487
Find a vector equation for the line through the point $(a,b,c)$ which is normal to the plane $\cdots$
128535
Find the equation of the tangent line to $y=x^4-4x^3-5x+7$
140519
How to determine the point of intersection of two lines?
89003
Finding a trigonometric polynomial
74641
Finding the contact point with SAT
56527
Ellipse formula from points
134129
Perpendicular Chord parabola
59791
Determine the exact value of equations involving more two trig variables
62260
Rational Coordinates with two intersecting lines