• #### 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.
• #### Trigonometric Ratios: Cosine - Problem 1

##### Math›Geometry›Basic Trigonometry
How to find the sine of an angle in a right triangle.
• #### 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.
• #### 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.
• #### Trigonometric Ratios: Cosine - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to find the cosine of an angle in a right triangle.
• #### Trigonometric Ratios: Cosine - Problem 2

##### Math›Geometry›Basic Trigonometry
How to find the length of a hypotenuse in a right triangle, given a side length.
• #### 45-45-90 Triangles - Problem 3

##### Math›Trigonometry›Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 45-45-90 triangles.
• #### Trigonometric Ratios: Cosine - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to find the length of a hypotenuse in a right triangle, given a side length.
• #### Trigonometric Ratios: Sine - Concept

##### Math›Geometry›Basic Trigonometry
How to define the sine ratio and identify the sine of an angle in a right triangle.
• #### Trigonometric Ratios: Cosine - Concept

##### Math›Geometry›Basic Trigonometry
How to define the cosine ratio and identify the cosine of an angle in a right triangle.
• #### Trigonometric Ratios: Sine - Concept

##### Math›Precalculus›Basic Trigonometry
How to define the sine ratio and identify the sine of an angle in a right triangle.
• #### Trigonometric Ratios: Cosine - Concept

##### Math›Precalculus›Basic Trigonometry
How to define the cosine ratio and identify the cosine of an angle in a right triangle.
• #### Trigonometric Ratios: Sine - Problem 1

##### Math›Geometry›Basic Trigonometry
How to find the sine of two angles in a right triangle given two side lengths.
• #### 45-45-90 Triangles - Problem 4

##### Math›Trigonometry›Pythagorean Theorem
How to calculate the area of a 45-45-90 triangle given only the length of the hypotenuse.
• #### Trigonometric Ratios: Tangent - Problem 2

##### Math›Geometry›Basic Trigonometry
How to find the tangent of an angle in an isosceles right triangle.
• #### Trigonometric Ratios: Tangent - Concept

##### Math›Geometry›Basic Trigonometry
How to define the tangent ratio and identify the tangent of an angle in a right triangle.
• #### Trigonometric Ratios: Tangent - Problem 1

##### Math›Geometry›Basic Trigonometry
How to find the length of a side in a right triangle using the tangent ratio.
• #### 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.
• #### Trigonometric Ratios: Tangent - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to find the tangent of an angle in an isosceles right triangle.
• #### Trigonometric Ratios: Tangent - Concept

##### Math›Precalculus›Basic Trigonometry
How to define the tangent ratio and identify the tangent of an angle in a right triangle.