Let's start from scratch and go over the super basic ideas of trig. Yes, I will also show you why you need this. Start With a Right Triangle There are only two requirements for a right triangle.

The class Trigonometry: Sine, Cosine, and Tangent discusses the three basic ratios that are the basis for trigonometry. Trigonometry is based on the specific relationships between the sides and angles ...

Calculate the length BC. Give the answer to three significant figures. Use the form \(a^2 = b^2 + c^2 - 2bc \cos{A}\) to calculate the length. \(\text{BC}^2 = 3^2 + 7^2 - 2 \times 3 \times 7 \cos ...

The trigonometric ratios sine, cosine and tangent are used to calculate angles and sides in right angled triangles. We are now going to extend trigonometry beyond right angled triangles and use it ...

Needless to say, this makes trig one of the hardest topics in math ... between the circle and the trigonometric functions and the triangles. That all changes with animated GIFs.