## 30-60-90 Triangles Part 1

Find the lenghts of unknown sides in a 30-60-90 triangle. (Recorded with https://screencast-o-matic.com)...

From James-Arthur Bartz

Find the lenghts of unknown sides in a 30-60-90 triangle. (Recorded with https://screencast-o-matic.com)...

From James-Arthur Bartz

Recorded with https://screencast-o-matic.com...

From James-Arthur Bartz

Using Law of Cosines to calculate side and angle measures of non-right triangles....

From James-Arthur Bartz

Use the Law of Sines to calculate side and angle measures of non-right triangles....

From James-Arthur Bartz

Using sine, cosine, and tangent functions to solve application problems with angles of elevation and angle of depression....

From James-Arthur Bartz

Using sine, cosine, and tangent functions to calculate side and angle measures of RIGHT triangles....

From James-Arthur Bartz

An introduction to the sine, cosine, and tangent functions....

From James-Arthur Bartz

Section 5.1: More Division of Exponents and Scientific Notation...

From James-Arthur Bartz

This video discusses properties of exponents when dividing bases and how to simplify with exponents that are zero or negative...

From James-Arthur Bartz

This video discusses the properties of exponents when multiplying monomials....

From James-Arthur Bartz

Section 5.1 Exponential Expressions - This video includes vocabulary that will be used throughout section 5.1 and the rest of chapter 5....

From James-Arthur Bartz

This is an example of using the quadratic formula (using the solver tool in Cognitive Tutor) to calculate the radius of a cylinder given the surface area and height....

From James-Arthur Bartz

An explanation of the Surface Area formula for a cylinder and two examples of calculating the surface area and lateral area of cylinders....

From James-Arthur Bartz

Two examples of calculating the surface area and lateral area of prisms using the formula S = 2B + Ph....

From James-Arthur Bartz

This video describes how to find the perimeter of a composite figure located in the coordinate plane....

From James-Arthur Bartz

This video describes how to find the area of a composite figure in the coordinate plane....

From James-Arthur Bartz

Parallel Line Proofs: Supplememntary Angles; Proving a pair of angles on different transversals are supplementary....

From James-Arthur Bartz

Parallel Line Proofs: Congruent Angles; proving a pair of angles on different transversals are congruent....

From James-Arthur Bartz

Completing a proof using the definition of midpoint....

From James-Arthur Bartz

Completing proofs using the concept of complementary and supplementary angles....

From James-Arthur Bartz

Completing a proof with equations that equal the same measure....

From James-Arthur Bartz

Completing a proof using the Segment Addition Postulate...

From James-Arthur Bartz

Completing a proof using the Angle Addition Postulate...

From James-Arthur Bartz

3 Examples...

From James-Arthur Bartz

3 Examples on how to solve systems of linear equations by hand. In example 3, I state that not all points on the line are a solution; this is incorrect. All points on the line are solutions, however, not all points in the coordinate plane are solutions....

From James-Arthur Bartz

This video demonstrates why an equilateral triangle is also an equiangular triangle. It is then followed by 3 examples of applying this concept....

From James-Arthur Bartz

Definition of the Converse of the Isosceles Triangle Theorem followed by 2 examples of the theorem being applied...

From James-Arthur Bartz

Definition and Proof of the Isosceles Triangle Theorem, followed by 2 examples where the theorem is applied...

From James-Arthur Bartz

Reflections in the Coordinate Plane...

From James-Arthur Bartz

Translations in the Coordinate Plane...

From James-Arthur Bartz