How to use the distance formula to derive the equation for a circle.
How to derive the formula for the midpoint of a segment in three dimensions.
How to derive the distance formula for polar coordinates.
How to differentiate a composite function when the outside function is the natural logarithm.
How to derive the formula to find the sum of angles in any polygon.
How to derive the area of a triangle formula using the rectangle area formula.
How to derive the area of a trapezoid formula using the area of a rectangle.
How to derive the equation for the distance between two points using the Pythagorean Theorem.
How to interpret the value of a limit important in the derivative of exponential functions.
How to use the unit circle to derive the tangent identity and the Pythagorean identity.
How to derive two more cosine double-angle formulas.
How to use the power reduction formulas to derive the half-angle formulas.
How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths.