• Right hand Rule

Science›Physics›Magnetism
How to use the right hand rule to predict forces in magnetic fields.
• Similar Triangles in Circles and Right Triangles - Problem 2

Math›Geometry›Similarity
How to find missing side lengths in a right triangle with an altitude drawn from the right angle.

• Similar Triangles in Circles and Right Triangles - Concept

Math›Geometry›Similarity
How to determine if two triangles in a circle are similar and how to prove that three similar triangles exist in a right triangle with an altitude.
• Similar Triangles in Circles and Right Triangles - Problem 1

Math›Geometry›Similarity
How to find missing side lengths of triangles in a circle.
• Converse of the Pythagorean Theorem - Concept

Math›Trigonometry›Pythagorean Theorem
How to use the converse of the Pythagorean Theorem to determine if a triangle is a right triangle, how to use Pythagorean triples to memorize the lengths of certain right triangles.
• Converse of the Pythagorean Theorem - Concept

Math›Geometry›Pythagorean Theorem
How to use the converse of the Pythagorean Theorem to determine if a triangle is a right triangle, how to use Pythagorean triples to memorize the lengths of certain right triangles.
• HL - Concept

Math›Geometry›Triangles
How to use the hypotenuse leg shortcut to determine the congruence of right triangles.
• HL - Problem 3

Math›Geometry›Triangles
How to solve for a variable to make two right triangles congruent using the HL shortcut.
• HL - Problem 2

Math›Geometry›Triangles
How to use HL to determine the congruence of adjacent right triangles and how to correctly denote the congruence.
• Constructing Altitudes - Concept

Math›Geometry›Constructions
How to define an altitude and draw them on acute, right, and obtuse triangles.

• 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 1

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

Math›Trigonometry›Basic Trigonometry
How to find the cosine of an angle in a right triangle.
• 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.
• Inverse Trigonometric Functions - Concept

Math›Geometry›Basic Trigonometry
How to use inverse trig functions to find angles in right triangles.
• 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: Tangent - Problem 2

Math›Geometry›Basic Trigonometry
How to find the tangent of an angle in an isosceles right triangle.