This video is answering the question of what is a triangle.

In this video, the teacher explains the criteria for proving similarity and congruency between triangles, using different combinations of angles and sides. The video covers the AAA, AA, AAS, SAS, SSS, and RHS criteria, and provides...

Did you know that we can calculate the area of triangle even without it's height? Heron from Alexandria, derived a formula to calculate the area of triangle by using only the sides of the triangle and by using the perimeter of the...

Understanding points and trigonometric functions in different quadrants

Sum and Difference Formula Evaluate with Right Triangles

Master evaluating the six trig functions, given a triangle with a missing side

Master composing inverse trig functions using right triangles

While you might not think that sharks and the Hubble Space Telescope have a lot in common, it turns out they share an incredible bond! Music: “Happy Tulip” by Stéphane Caisson [SACEM], Koka Media [SACEM], via Universal Publishing...

👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...

👉 Learn how to determine if a given SSA triangle has 1, 2 or no possible triangles. Given two adjacent side lengths and an angle opposite one of them (SSA or ASS), then there are 3 possible cases: there can be 1 solution, 2 solutions,...

👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...

Timestamps: 0:00 Intro 0:55 Example #1 (one triangle) 4:30 Example #2 (no triangle) 5:05 Example #3 (two triangles) Corrections: 3:58 I made a mistake, I replaced the side b=15 to the angle A. It should have been h = (15)(sin40); (h = 9.64)

👉 Learn how to define and classify different angles based on their characteristics and relationships are given a diagram. The different types of angles that we will discuss will be acute, obtuse, right, adjacent, vertical, supplementary,...

Pc6 Law of Cosines SAS

👉 Learn how to evaluate the six trigonometric functions given a right triangle. A right triangle is a triangle with 90 degrees as one of its angles. A right triangle is made up of two legs, which formed the sides of the 90 degrees angle...

👉 Learn how to prove that two triangles are congruent. Two or more triangles are said to be congruent if they have the same shape and size. There are many postulates and theorems to determine whether two triangles are congruent. They...

👉 Learn how to determine if a given SSA triangle has 1, 2 or no possible triangles. Given two adjacent side lengths and an angle opposite one of them (SSA or ASS), then there are 3 possible cases: there can be 1 solution, 2 solutions and...

👉 Learn how to evaluate trigonometric functions of a given angle. Given an angle greater than 2pi in radians, to evaluate the trigonometric functions of the given angle, we first determine the smallest positive coterminal angle of the...

If you have every struggled with using special right triangles like the 30-60-90 or 45-45-90 triangle to find the missing side then this video is sure to entertain you as we explore 36 different examples given the short leg, long leg and...

Master How to determine the angle of a vector

Looking for an easy way to remember the unit circle or just use it to evaluate trigonometric functions. If you are in a pinch of time here is a brief explanation of how I taugh my Algebra 2 students.

SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps. This video looks at...

Now you're really getting advanced with your building skills. Check out this pendulum. It's a good thing we know about potential energy and kinetic energy, because that will allow us to calculate the velocity of the pendulum at any...

Generate a shape pattern that follows a given rule.