Edexcel A level Maths : 7.3 The Double Angle Formulae

https://www.buymeacoffee.com/zeeshanz... Pearson A level Maths, Pure Year 2 Textbook (7.3) In this video I introduce the double angle formulae for sin, cos and tan; explaining thoroughly how it works. The next phase of the video is looking at its application. Follow me on Twitter and Instagram: Twitter :   / zzamurred   Instagram :   / zeeshanzamurred