Mathematics — popular questionsPage 3

Proving the space of linear maps is infinite-dimensional

Finding the area of a quadrilateral using triangle decomposition

Proving a triangle cannot exist with the cosine rule

Finding parallel values for two-dimensional vectors

Vector addition subtraction and magnitude with coordinates

Finding conditional probability of running on a windy day

Finding integer k from a cubic with one positive integer root

Using binomial coefficients in a seventh power expansion

Finding a Fibonacci recurrence for linear combinations of roots

Finding the shortest tunnel from a point to a line in three dimensions

Finding where x ln x is decreasing using the derivative

Line perpendicular to a plane through a point in 3D

Evaluating tangent at zero degrees and ninety degrees

Finding a missing side and angle in a right triangle

Solving two right triangles for x and y with tangent

Using the diagonal of a rectangle to find an angle

Finding house width from a roof triangle and angle

Hexagons in n-Row Grid: Triangular Number Formula

Proof of the divided-difference mean value lemma

Volume of revolution for a semicircle about the y-axis