Trigonometry - Proving Identities

(based on the Double Angle formulae)

You will be expected to be able to prove a trig. identity such as the examples below. In the videos I show you how to set out an identity and what to look for.

This is a tricky topic and one that I find students give in too quickly. Learn your formulae and have patience.

Double Angle Formulae

Section B

My site is still free after 8 years but if you can support my time and running costs by making a donation I will write to you personally to thank you.

Worked Solution to (1)


Like my work? please share

facebook google+ twitter

General Tutorial Index

Get the ExamSolutions Apps for iOS / Android

For revision on the go

Download videos

View later when offline.

more details ...

Apple App Store

Get it on Google Play

ExamSolutions App

Hertfordshire Web Design