Math

Trigonometry made easy
Trigonometry made easy Teacherflix 18 Views • 1 year ago

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles. In this video we look at the use of trigonometry with right triangles, solving for both sides and angles.

To support tecmath on Patreon:
https://www.patreon.com/tecmath

BTW for those interested - the history of trigonometry history is fascinating!
The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies.
The use of trigonometry really took off due to it's use in navigation - trigonometry has been used for locating latitudes and longitudes of sailing vessels, plotting courses, and calculating distances during navigation.
Trigonometry is still used in navigation through such means as the Global Positioning System and artificial intelligence for autonomous vehicles.

But the truly cool trigonomic endevour was The Great Trigonomical Survey.
The Great Trigonometrical Survey was a project which aimed to measure the entire Indian subcontinent with scientific precision. It was begun in 1802 and completed of it in 1871.
Among the many accomplishments of the survey was measurement of the height of the Himalayan giants: Everest, K2, and Kanchenjunga. The Survey had an enormous scientific impact as well, being responsible for one of the first accurate measurements of a section of an arc of longitude.
Triangulation surveys were based on a few carefully measured baselines and a series of angles. The initial baseline was measured with great care, since the accuracy of the subsequent survey was critically dependent upon it. Various corrections were applied, principally temperature. An especially accurate folding chain was used, laid on horizontal tables, all shaded from the sun and with a constant tension. The early surveys made use of large and bulky theodolites made by William Carey, a Zenith sector made by Jesse Ramsden and 100-foot (30 m) chains!
Interesting aside - Everest was one of the leaders of the survey - and his name was pronounced Eve-rest not Ever-est! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: https://teespring.com/stores/tecmath-store

The Game of Nim - a math game of strategy using matchsticks!
The Game of Nim - a math game of strategy using matchsticks! Teacherflix 7 Views • 1 year ago

This video was sponsored by Skillshare.
The first 1000 people to use the link will get a free trial of Skillshare Premium Membership.
https://skl.sh/tecmath10201

The game of nim is an easy to learn math strategy game, that can be played anywhere with matchsticks, rocks, twigs....
But best of all, whilst it looks fair, there is a math strategy you can employ to win everytime!

Game of Nim link: https://www.archimedes-lab.org..../game_nim/play_nim_g

To donate to the tecmath channel:https://paypal.me/tecmathlocale.x=en_AU

To support tecmath on Patreon: https://www.patreon.com/tecmath

To buy tecmath mechandise: teespring.com/stores/tecmath-store

#skillshare
#sponsoredvideo
#mathgame

Multiplying Fractions Using Cancellation | Math with Mr. J
Multiplying Fractions Using Cancellation | Math with Mr. J Teacherflix 192 Views • 1 year ago

Welcome to Multiplying Fractions Using Cancellation with Mr. J! Need help with how to multiply fractions? You're in the right place!

Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with multiplying fractions with cross cancellation. Mr. J will go through multiplying fractions with cross canceling examples and explain how to multiply fractions using cancellation.

✅ Improper Fractions to Mixed Numbers:
https://youtu.be/EpXCr2iax5E

✅ Mixed Numbers to Improper Fractions:
https://youtu.be/96NOYcnmThU

✅ Simplifying Fractions:
https://youtu.be/oFVzcnJfYkg

✅ Plus many more... Just search what topic you are looking for + "with Mr. J" (for example, "adding fractions with Mr. J".

About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free.

Click Here to Subscribe to the Greatest Math Channel On Earth: https://goo.gl/XHTrfY

Follow Mr. J on Twitter: @MrJMath5

Email: math5.mrj@gmail.com

Music: https://www.bensound.com/royalty-free-music

Hopefully this video is what you're looking for when it comes to multiplying fractions using cancellation.

Showing 100 out of 101