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Trigonometry Lesson 4 identities t formulas
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Video Source: www.youtube.com/watch?v=bDV5I6jhVx0
The 't' formulas for sine, cosine and tangent are derived and examples are given. • Click onto the SUBSCRIBE button, located under my banner, and be kept up to date with my latest videos. Two or more videos a day will be uploaded on the harder courses in the Higher School Certificate (HSC) in NSW Australia. These courses are equivalent in standard to the A-Levels in Great Britain, the AP Level in the USA and the International Baccalaureate (IB). The content is similar, but where there are differences, additional videos will be provided. • The topics of Coordinate Geometry, Circle Geometry and Inequalities, in PDF form, can be downloaded FREE of charge from my website http://www.harderhscmaths.com. You may also purchase other topics for $1.95 (AUS) • Regards, John Kinny-Lewis
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