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

##### Math›Trigonometry›Basic Trigonometry
How to find the sine of two angles in a right triangle given two side lengths.
• #### Inverse Trigonometric Functions - Problem 1

##### Math›Geometry›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### Area With Determinants - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to use the triangle area formula to test three points for collinearity.
• #### 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.
• #### Inverse Trigonometric Functions - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### Inverse Trigonometric Functions - Problem 1

##### Math›Trigonometry›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• #### The Angle Between Vectors - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How to compute one of the angles of a triangle when you are given the coordinates of its three vertices.
• #### Area With Determinants - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the area of a triangle using a determinant.
• #### Using the Pythagorean Theorem to find a Missing Hypotenuse - Concept

##### Math›Geometry›Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem.
• #### Using the Pythagorean Theorem to find a Missing Hypotenuse - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem.
• #### Using the Pythagorean Theorem to find a Missing Hypotenuse - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem.
• #### Using the Pythagorean Theorem to find a Missing Hypotenuse - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem.
• #### Area With the Cross Product - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the area of a triangle in the xy-plane using vectors formed from two of its sides.
• #### Volume of Pyramids - Problem 2

##### Math›Geometry›Volume
How to find, in an equilateral triangle pyramid, the side length of the triangle, given the volume and height.
• #### Constructing a Median - Concept

##### Math›Geometry›Constructions
How to define a median in a triangle.
• #### Constructing the Orthocenter - Concept

##### Math›Geometry›Constructions
How to construct the orthocenter of a triangle.
• #### The Law of Cosines - Concept

##### Math›Trigonometry›Basic Trigonometry
How to define and use the law of cosines.
• #### Proportions - Problem 8

##### Math›Algebra›Solving Equations
Geometry similar triangles problems that are solved using proportions
Tags:
• #### Constructing a Median - Problem 1

##### Math›Geometry›Constructions
How to construct a median in a triangle.
• #### The Law of Cosines - Concept

##### Math›Precalculus›Basic Trigonometry
How to define and use the law of cosines.