## Archive for the ‘4. Trigonometry Videos’ Category

### Ex: Solve a Right Triangle Using Inverse Trigonometric Functions

This video explains how to solve a right triangle using inverse trigonometric functions.

### An Equation for Simple Harmonic Motion of a Spring

This video explains how to find the equation for simple harmonic motion of a spring.

### Ferris Wheel Trigonometry Problem

This video explains how to determine the equation that models the height of person on a Ferris wheel.  With the equation, the height is determined and the times are determined when a person is at a specific height.

### Ex 1: Raise a Complex Number in Cartesian Form to a Power – Demoivre’s Theorem

This video explains how to use Demoivre’s Theorem to raise a complex number in Cartesian form to a power.  The angle is a common reference angle.

### Ex 2: Raise a Complex Number in Cartesian Form to a Power – Demoivre’s Theorem

This video explains how to use Demoivre’s Theorem to raise a complex number in Cartesian form to a power.  The angle is NOT a common reference angle.

### Ex: Convert a Complex Number in Cartesian Form to Exponential Form

This video explains how to write a complex number given in Cartesian form in exponential form.

### Ex: Convert a Complex Number in Exponential Form to Cartesian Form

This video explains how to write a complex number given in exponential form in Cartesian form.

### Ex: Raise a Complex Number in Polar Form to a Power – Demoivre’s Theorem

This video explains how to use Demoivre’s Theorem to raise a complex number in polar form to a power.

### Ex: Raise a Complex Number in Polar Form to a Power Using Exponential Form

This video explains how to use the exponential form of a complex number to raise a complex number in polar form to a power.

### Ex: Find the Coordinates of a Rotated Point Using Vectors

This video explains how to determine the coordinates of a point that is rotated on the coordinate plane.