Extra Resources 

what is the sine ratio?

how do you find the cosine of an angle in a right triangle?

what is the tangent ratio?

6 Trigonometric Ratios - Sin, Cos, Tan, Csc, Sec, Cot

Trigonometry - Special triangles -- Very important 

Trigonometry - The signs of trigonometric functions

Trig Ratios from Ordered Pairs

Extra Resources 

how do you find a missing side of a right triangle using sine?

how do you find a missing side of a right triangle using cosine?

how do you find a missing side of a right triangle using tangent?

Trigonometric inverses: Arcsin Arccos Arctan

How to use Trigonometry functions on the Google Calculator

Extra Resources 

what is the law of cosines?

The Cosine Law 

How to use law of cosines to find the missing angles

Extra Resources 

what is the law of sines?

The Sine Law for Acute Triangles

Sine Law for Obtuse Triangles

Extra Resources 

what is a vector?

Vectors - Finding Magnitude or Length

Unit Vectors - How to find

Vector components from magnitude and direction

Extra Resources 

Vector Operations Algebraically

Dot Product to Multiply Vectors

How to determine if two vectors are parallel, orthogonal or neither

Angle Between 2 Vectors (Formula)

How to use vectors to solve a word problem

Determine angle between two vectors 

More Resources 

Applications of Sine or Cosine Law

Extra Resources 

Inverse trig functions: arcsin 

Extra Resources 

Inverse trig functions: arccos

Extra Resources 

Inverse trig functions: arctan