Compound Angle Formulae What are the compound angle formulae? There are six?compound angle formulae?(also known as?addition formulae), two each for?sin,?cos?and?tan: For?sin?the +/- sign on the lef...
Edexcel IGCSE Chemistry 復習筆記 1.1.5 Practical: Investigate the Solubility of a Solid in Water at a Specific Temperature Practical: Investigate the Solubility of a Solid in Water at a Specific Te...
Edexcel IGCSE Chemistry 復習筆記 1.1.4 Solubility Solubility Solubility is?a measurement of how much of a substance will dissolve in a given volume of a liquid The liquid is called the solve...
Edexcel IGCSE Chemistry 復習筆記 1.1.3 Solutions Solutions Terminology You need to know all the following terms used when describing solutions: Terminology About Solutions Table 轉載...
Simple Identities What is a trigonometric identity? They are used to help simplify trigonometric equations before solving them Sometimes you may see identities written with the symbol?≡ This means ...
Energy of an Orbiting Satellite An orbiting satellite follows a circular path around a planet Just like an object moving in circular motion, it has both kinetic energy (KE)?and?gravitational...
Circular Orbits in Gravitational Fields Since most planets and satellites have a near circular orbit, the gravitational force?FG?between the Sun and another planet provides the?centripetal f...
Edexcel IGCSE Biology 復習筆記 1.1.2 Diffusion & Dilution Diffusion & Dilution Diffusion and dilution experiments support a theory that all matter (solids, liquids and gases) is made...
Modelling with Trigonometric Functions What can be modelled with trigonometric functions? Anything that oscillates (fluctuates periodically) can be modelled using a trigonometric function Normally ...
