12:38

The Importance of the lim(x→0)⁡(sin⁡x/x)=1 and Its Geometric Proof

06:24

d/dx(sin(x)) = cos(x). The Proof Using the Definition of the Derivative of a Function.

03:46

What are the measures of angles C and D? Full Explanation.

06:21

How to Find the Derivative of f(x)=x^(1/3) Using the Definition of a Derivative Function

02:27

What is a Tangent Line? Can a Tangent Line Cross a Curve at the Point of Tangency?

04:44

Find Angle x. Think Outside the Box with This Geometry Challenge.

16:41

How to Convert Rectangular to Polar Coordinates. Full Guide with Examples for Each Quadrant.

03:48

Find Angle θ. ⏜CD=x°,⏜BD=(2x)°,⏜AB=(4x-6)°,and ⏜AC=(3x-4)°.

03:18

Find Angle θ. Boost Your Geometry and Trig Skills.

01:36

If ab=24 and a+b=11, what is 1/a+1/b?

04:27

How to Convert Polar Coordinates to Rectangular Coordinates with Example.

04:04

Find the Radius of a Circle Inscribed in a Right Isosceles Triangle.

09:41

The Polar Coordinate System: One Point – Multiple Representations

08:43

How to Plot Points in the Polar Coordinate System

07:27

Can You Find Side x? Put Your Trig Skills to the Test!

05:04

Find Angle θ. Two Methods – Which One You Would Use?

02:51

Shape Up Your Geometry Knowledge! Find the Area of the Triangle AOB.

08:54

How to Use The Law of Cosines to Solve a SSS Triangle with an Example

12:54

How to Use The Law of Cosines to Solve a SAS Triangle. IN-DEPTH EXPLANATION.

02:57

The Law of Cosines - How to Deduct the Angle Formulas.

08:14

Find the Radius r. Intriguing Geometry Challenge.

05:54

Can You Find Angle α? Geometry Challenge!

06:24

The Law of Cosines – The Proof Using Trigonometry and the Pythagorean Theorem

01:55

The Law of Cosines – What if Angle C=90°?

07:44

The Law of Cosines – The Proof Using the Distance Formula

01:55

Find the Perimeter of △ABC if AD = 5.

02:02

In the Given Polygon, Find Side x.

10:41

Using the Law of Sines to Solve an SSA Triangle(The Ambiguous Case with Two Triangles)

05:36

How to Find the Area of a Circle Given Two Perpendicular Chords. Geometry Challenge

04:45

Use the Law of Sines to Solve an SSA Triangle (The Ambiguous Case with No Solution)

05:22

Use the Law of Sines to Solve an SSA Triangle (The Ambiguous Case with 1 Solution)

04:07

How to Solve an ASA Triangle Using the Law of Sines

04:59

How to Solve an SAA Triangle Using the Law of Sines

03:35

Solving Triangles Using the Law of Sines - Three Cases: SAA, ASA, and SSA

13:09

The Law of Sines - Why It Works? (Two Proofs)

08:56

How to Find the Coordinates of the Circumcenter Given the Coordinates of the Vertices of a Triangle

11:29

Find the Radius of the Small Circle - Geometry Challenge

10:06

Solve the equation csc⁡2x-2 sin⁡2x=1 and find the values of x on [0,2π).

03:29

Solve the equation tan⁡θ=cot⁡θ and find the values of θ on [0,2π).

05:51

Solve the equation 2sin^2⁡(x)-sin(⁡)x-1=0 and find the values of x on [0,2π).

02:34

What is Number Pi?

08:48

If the Area of the Blue Region is Equal to the Area of the Green Region, then What is AB?

04:05

How to Deduct the Formula for the Height of a Triangle Given 3 Sides (Example Included)

03:49

Solve the equation 2sin^2(⁡x)=sin(⁡x) and find the values of x on [0,2π).

06:52

Solve the Equation sin⁡(2x-π/2)=√2/2 on the Interval [0,2π).

10:47

If the Radius of the Quarter Circle is 4 Units, What is the Area of the Yellow Region?

04:20

Given the Perimeter, Find the Area - Solve It in Under 60 Seconds

13:15

How to Derive the Quadratic Formula - A Detailed Explanation

05:11

Solve the Equation cos⁡(2x)=-1/2. Find All the Solutions Using the Unit Circle.

05:01

Solve Two Trig Equations sin⁡ x=1/2 and sin⁡ x=√2/2. Find All the Solutions Using the Unit Circle.

08:43

What is the area of the quarter circle? Geometry Challenge!

08:27

The Product-to-Sum Formulas for Sine and Cosine Explained

08:26

Given the Sides of a Rectangle and an Inscribed Circle, Find the Chord AB.

15:30

Half-Angle Formulas for Sine, Cosine, and Tangent Explained (With Examples)

02:57

How to Draw a Golden Rectangle with Just a Ruler

05:33

If AB=7, What is AC?

09:06

How to Use the Power-Reducing Formulas in Analytic Trigonometry. Two Step-by-Step Examples.

05:11

Find the Diameter AB. Geometry Challenge!

03:57

The Power-Reducing Formulas - Learn How to Prove Them

07:26

Given a Point, Find sin⁡2θ,cos⁡2θ, and tan⁡2θ, Using the Double Angle Formulas.