• #### Using Sine to Calculate the Area of a Triangle - Concept

##### Math›Precalculus›Basic Trigonometry
How to calculate the area of any triangle using two sides and an included angle.
• #### 30-60-90 Triangles - Problem 3

##### Math›Geometry›Pythagorean Theorem
How to find the short leg and long leg in a 30-60-90 triangle given the hypotenuse.
• #### Using Sine to Calculate the Area of a Triangle - Concept

##### Math›Geometry›Basic Trigonometry
How to calculate the area of any triangle using two sides and an included angle.
• #### Using Sine to Calculate the Area of a Triangle - Problem 1

##### Math›Geometry›Basic Trigonometry
How to calculate the area of a triangle using two sides and an included angle.
• #### HL - Concept

##### Math›Geometry›Triangles
How to use the hypotenuse leg shortcut to determine the congruence of right triangles.
• #### Pascal's Triangle - Concept

##### Math›Algebra 2›Polynomials
How to use Pascal's triangle.
• #### 30-60-90 Triangles - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to find the legs and hypotenuse in 30-60-90 triangles when given: the short leg, the long leg, or the hypotenuse.
• #### 30-60-90 Triangles - Problem 2

##### Math›Trigonometry›Pythagorean Theorem
How to find the short leg and hypotenuse in a 30-60-90 triangle given the long leg.
• #### Using Sine to Calculate the Area of a Triangle - Concept

##### Math›Trigonometry›Basic Trigonometry
How to calculate the area of any triangle using two sides and an included angle.
• #### 30-60-90 Triangles - Problem 3

##### Math›Trigonometry›Pythagorean Theorem
How to find the short leg and long leg in a 30-60-90 triangle given the hypotenuse.
• #### Using Sine to Calculate the Area of a Triangle - Problem 1

##### Math›Trigonometry›Basic Trigonometry
How to calculate the area of a triangle using two sides and an included angle.
• #### 45-45-90 Triangles - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to find the hypotenuse in a 45-45-90 triangle given a leg with a length that contains a square root.
• #### 45-45-90 Triangles - Concept

##### Math›Geometry›Pythagorean Theorem
How to find the length of a leg or hypotenuse in a 45-45-90 triangle using the Pythagorean Theorem.
• #### Pascal's Triangle - Concept

##### Math›Precalculus›Topics in Discrete Math
How to use Pascal's triangle.
• #### 30-60-90 Triangles - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to find the long leg and short leg in a 30-60-90 triangle given the hypotenuse.
• #### 30-60-90 Triangles - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to find the long leg and short leg in a 30-60-90 triangle given the hypotenuse.
• #### 45-45-90 Triangles - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to find the length of a leg or hypotenuse in a 45-45-90 triangle using the Pythagorean Theorem.
• #### 45-45-90 Triangles - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to find the hypotenuse in a 45-45-90 triangle given a leg with a length that contains a square root.
• #### Pascal's Triangle - Problem 1

##### Math›Algebra 2›Polynomials
Exploring Pascal's Triangle, its patterns, and its connections to binomial expansion, and combinatorics.
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• #### 45-45-90 Triangles - Problem 3

##### Math›Geometry›Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 45-45-90 triangles.