#geometryUnmoderated tagAll postsTrendingHotNewPromotedPayoutsmes in #hive-128780 • 5 days agoExamples on Spheres▶️ Watch on 3Speak In this video I go over two examples involving spheres. The first exexilldiogolvin in #forhive • 11 months agoProblem of the day! (Analytic Geometry)A triangle is defined by the points (2,6), (-2,2) & (5,2). Determine the area of the triangle in meters if one unit is equal is equal to one meter. Graph: Solution: ![ "image.png"](fiberfrau in #hive-127911 • 2 years agoTwo Ways to Knit a Heel (It's Just Geometry)This math teacher made it to the heels of two socks this week. The geometry of socks (unless they are very stretchy tube socks) must include some way of shaping around the…mes in #hive-128780 • 2 years agoTriangle Inequality - Simple ProofIn this video I go through a very interesting topic, the triangle inequality. Basically the triangle inequality states: the absolute value of (a+b) is less than or equal to the…mes in #hive-128780 • 8 months agoVectors and the Geometry of Space: 3D Coordinate SystemsIn this video I go over a new chapter in my calculus book and cover Vectors and the Geometry of Space. More specifically, I cover the first section of that chapter which is on…mes in #hive-128780 • 7 months agoPi = 3.1415 Proof: Archimedes' Geometric ProofIn this video I go through one of the oldest Pi derivations known to man. Archimedes proved that Pi is equal to roughly 3.141 over 2000 years ago using basic geometry. He took a…mes in #hive-128780 • 2 months agoEquation of a Circle - and its ProofIn this video I discuss the equation of a circle and show how to graph it. I also prove that the distance from any point on the circle from the center of the circle is just the…mes in #hive-128780 • 3 months agoGeometry of a Tetrahedron: Question 3: 3D Pythagorean Theorem▶️ Watch on 3Speak In this video I go over Question 3 of the Discovery Project: Geometrmes in #hive-128780 • 8 days agoEquation of a Sphere▶️ Watch on 3Speak In this video I go over the equation of a sphere by utilizing the dimes in #hive-128780 • 2 months agoNegative Reciprocals and Perpendicular LinesIn this video I discuss negative reciprocals and prove that the intersection of two lines that have slopes which are negative reciprocals of each other are indeed perpendicular…mes in #hive-128780 • 27 days agoTrigonometry Identities: cos(x +/- y) = cos(x)cos(y) -/+ sin(x)sin(y)In this video I derive addition and subtraction identities, cos(x+y) and cos(x-y), using the Law of Cosines and the Pythagorean Theorem. This identity is very useful in all of…mes in #hive-128780 • 22 days agoTrigonometry: Proof of Law of Cosines (and Pythagorean Theorem)In this video I show a simple geometric proof of the cosine law. This is very useful in real world applications. Also from the proof of the cosine law you can easily proof the…mes in #hive-128780 • 25 days agoTrigonometry Identities: sin(-x) = - sin(x) and cos(-x) = cos(x)In this video I prove the two identities, sin(-x) = - sin(x) and cos(-x) = cos(x), which show that cosine is an even function while sine is an odd function. Download video…mes in #hive-128780 • 28 days agoTrigonometry Identities: cos(2π + x), sin(2π + x), cos(π/2 -x), sin(π/2 -x)In this video I show some very useful trigonometric identities which basically involve shifting the sine or cosine functions by either 2π or 360 degrees and π/2 or 90 degrees.…mes in #hive-128780 • 3 months agoDiscovery Project: The Geometry of a TetrahedronIn this video I go over the Discovery Project titled The Geometry of a Tetrahedron. Discovery Projects are advanced math problems in each chapter of my calculus book, and this…mes in #hive-128780 • 2 months agoVectors: Components and the Position Vector▶️ Watch on 3Speak In this video I show how we can treat vectors algebraically by intromes in #hive-128780 • 17 days agoCircle and Cylinder in 3D Coordinates▶️ Watch on 3Speak In this video I go over an example on graphing a circle and a cylindmes in #hive-128780 • 3 months agoGeometry of a Tetrahedron: Question 2: Volume of a Tetrahedron in Vector Coordinate Form▶️ Watch on 3Speak In this video I go over Question 2 of the Discovery Project: Geometrmes in #hive-128780 • 20 days agoVertical and Horizontal Planes▶️ Watch on 3Speak In this video I go over graphing vertical and horizontal planes in 3mes in #hive-128780 • 14 days agoGraphing the y = x Plane in 3D Coordinates▶️ Watch on 3Speak In this video I go over a short example on graphing the equation y =