Animated Mathematics

Trigonometry: Content

Right Angle Trig

Trigonometry of the right angled triangle. The definition of cosine, sine, and tangent of an angle.

Using Trig

Finding a side given one side and and angle. Calculating the angle given two sides.

The Unit Circle

This is a very important concept. Definition of sine, cosine, and tangent for angles greater than 90 degrees is through the unit circle. There is no modern trigonometry without the unit circle.

Ambiguous Case I

Under construction: this is the ambiguous case of the sine rule.

Ambiguous Case II

The ambiguous case solve using the cosine rule.