Khan Academy
Khan Academy: Algebra: Conic Sections: Tangent Line Hyperbola Relationship
A video lesson showing the algebraic relationship between the equation of an arbitrary hyperbola and its arbitrary tangent line. [10:04]
Khan Academy
Khan Academy: Trigonometry: Tangent Identities: Periodicity
Sal solves a problem by considering the periodicity of the tangent function. [4:01]
Other
Trigonometric Functions f.tf.4
In this teacher-created video, trigonometric functions are developed and explored by changing one of the angles in a right triangle. [10:57]
PBS
Pbs: Measurement and Geometry: Finding the Area of Irregular Figures
Video explains area which is the measure of the surface inside a flat figure and is measured in square units.
PBS
Pbs: Measurement and Geometry: Angles: Vertical and Congruent
Vertical angles lie diagonally opposite one another at an intersection and are always equal in measure. This makes them congruent.
PBS
Pbs: Measurement and Geometry: Angles: Right and Obtuse
Angles are measured in degrees, and are classified as right, obtuse, acute, or straight.
PBS
Pbs: Measurement and Geometry: Angles: Naming
This video demonstrates the three ways for naming an angle: by its vertex, by the three points of the angle, or by a letter or number written within the opening of the angle.
PBS
Pbs: Measurement and Geometry: Ged Formulas: Isolating the Variable
Sometimes problems will ask you to solve for a "missing" dimension. This can be done using an algebraic strategy known as isolating the variable.
PBS
Pbs: Measurement and Geometry: Finding Volume
video segment explores how to find volume using the formula Volume = length x width x height.
PBS
Pbs: Measurement and Geometry: Finding Area
Area is the measure of the surface inside a flat figure and is measured in square units.