In these two videos we learn how to graph waves using trigonometric functions.

# Trigonometry

# Graphs of Sine and Cosine

StandardIn these videos we learn about the graphs of sin(x) and cos(x).

# Reciprocal Trig Ratios

StandardIn this video we learn three new trig ratios called the reciprocal ratios. (secant,cosecant,and cotangent)

# Unit Circle Part 2

StandardMore about why the unit circle is useful.

# The Unit Circle

StandardIn this video I introduce the unit circle.

# Radians

Standard#### What is a radian?

Here is a video about them. There is also more information below the video.

A radian is a unit of measuring angles just like a degree is. A radian is a distance on the circle’s circumference which is equal to 1 radius.

This means there are radians in one circle or that radians equals 360 degrees.

If radians equals 360 degrees that means that 1 degree equals divided by 360 radians or divided by 180 radians.

1 radian = degrees

1 degree = radians

This is a degrees and radians chart. If 1 degree = radians then 30 degrees equals 30 times that or radians. The same thing can be done to find the radian measure for other angles.

# Solving Using Trigonometry Part 2

StandardMore about solving for the side of a triangle using trigonometry.