Posts Tagged ‘trigonometric’

Cofunction Identities

This video explains the cofunction identities and how to determine cofunctions given a function value.  Most cofunction values are verified on a calculator.

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Cofunction Identities – Solving Trigonometric Equations

This video explains how to use cofunction identities to solve trigonometric equations.

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Ex: Solve Trig Equation: sin(x) = cos(x)

This video explains multiple ways to solve the trigonometric equation sin(x) = cos(x) on the interval [0, 2pi).

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Ex 2: Solve a Linear First-Order Differential Equation

This video explains how to find the general solution to a linear first order differential equation.  This example contains trigonometric functions.

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Ex 3: Differential Equations: Separation of Variables

This video solves a differential equation using separation of variables.  This differential equation involves trigonometric functions.

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Ex: Evaluate a Trig Expression with an Inverse Trig Function in Terms of u.

This video explains how to evaluate a trigonometric expression containing an inverse trig function.  The expression is evaluated in terms of u.

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Ex: Evaluate a Trigonometric Expression Containing an Inverse Trig Function – Double Angle

This video explains how to evaluate a trigonometric expression containing an inverse trig function.  The expression also required the use of a double angle identity.

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Ex 1: Solve a Trig Equation Contain Inverse Trig Functions

This video explains how to solve a trigonometric equation contains one inverse trigonometric function.

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Ex: Solve a Trig Equation for One Variable in Terms of Another

This video explains how to isolate one variable in a trigonometric equation containing two variables.

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Ex 2: Solve a Trig Equation Contain Inverse Trig Functions

This video explains how to solve a trigonometric equation contains two inverse trigonometric functions.

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