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
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