Triangles are the building blocks of all other straight-edged shapes. They were used for hundreds of years to create accurate maps and GPS today still works using trigonometry. Even the pixels on phones and screens use trigonometry.We need to know these things so that we can work out exact lengths of sides of triangles or how big certain angles are in triangles. There are 3 main functions in trigonometry: - Sine - Cosine - Tangent These functions are just ratios between sides and angles on right-angle triangles. So we need to firstly know which side is the hypotenuse, which is the opposite and which is the adjacent. The hypotenuse is the longest side and is always opposite the right-angle. Then we have the adjacent and the opposite. These change positions depending upon which angle we are using.Here, this side is the opposite because it is opposite the angle and this side is the adjacent because it is next to the angle. But see how when we change the angle, the adjacent and opposite move. Sin cos and tan are just ratios between sides and angles on right-angle triangles. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org Click here to see more videos: https://alugha.com/FuseSchool
Ecosystems are large, often highly complex areas of our environment. In this video we learn how abiotic and biotic factors interact with one another in a ecosystem, how trophic levels work, and how various factors in an ecosystem lead to evolution of species through different selection pressures.
Learn the basics about Indicators, more specifically for acid and bases. An indicator is a large organic molecule that works somewhat like a " color dye". Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY
The flick of a switch, that’s how easy it is to get electricity, right? If you’re one of the lucky ones, then yes. But in 2017 there are still over 1 billion people who do not have access to electricity. In this video we will discuss how electricity is generated and transferred to our homes, for th
