• #### Trigonometric Ratios: Sine - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to find the sine of two angles in a right triangle given two side lengths.
• #### Angle Bisectors and Opposite Side Ratios - Problem 1

##### Math›Geometry›Similarity
How to find a missing length created by a median in a triangle using a proportion.
• #### Angle Bisectors and Opposite Side Ratios - Concept

##### Math›Geometry›Similarity
How to relate the sides of an angle bisected and the lengths of the opposite side.
• #### Angle Bisectors and Opposite Side Ratios - Problem 2

##### Math›Geometry›Similarity
How to find a missing length, given the length of the opposite side in a triangle.

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• #### Ratios and unites - Problem 3

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Reading a table to create ratios and change ratios with new data
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• #### Ratios and unites - Problem 1

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Writing a ratio in three different forms
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• #### Ratios and unites - Concept

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Definitions and notation of ratios, and when we use them
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• #### Ratios and unites - Problem 2

##### Math›Pre-Algebra›Fractions and MIxed Numbers
Using ratios for dimensional analysis
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• #### Circumference - Concept

##### Math›Geometry›Circles
How to calculate the circumference of a circle.
• #### Solving Proportions - Concept

##### Math›Geometry›Similarity
How to solve a simple proportion.
• #### Proportions - Concept

##### Math›Algebra›Solving Equations
How to solve proportions.
• #### Circumference - Problem 2

##### Math›Geometry›Circles
How to find the radius of a circle given circumference.
• #### Probability - Problem 3

##### Math›Pre-Algebra›Introductory Statistics
Geometric probability is the ratio of areas
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• #### Proportions - Problem 7

##### Math›Algebra›Solving Equations
Turning ratio notation with a colon into a fractional representation of a proportional word problem
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• #### Circumference - Problem 3

##### Math›Geometry›Circles
How to find the perimeter of a figure that appears to be a track.
• #### Proportions - Problem 3

##### Math›Algebra›Solving Equations
How to solve word problems involving proportions.
• #### Proportions - Problem 1

##### Math›Algebra›Solving Equations
How to solve proportions when x is in the numerator.
• #### Solving Proportions - Problem 2

##### Math›Geometry›Similarity
How to solve a proportion with a variable expression.
• #### The Law of Sines - Concept

##### Math›Geometry›Basic Trigonometry
How to define the law of sines.