Proof of sin 2x = 2 sinx cosx = 2 tan x /(1+tan²x) where x is not an odd multiple of pi/2 🔥

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Hey Students!!! 🧑‍🎓 🥳 🤠 👏 👩‍🎓
In this tutorial you will learn the proof of the a very important trigonometric identities:
sin 2x = 2 sinx cosx = 2 tan x /(1+tan2x)

These can also be written as
sin 2θ = 2 sinθ cosθ = 2 tan θ /(1+tan2θ)
sin 2 theta = 2 sin theta cos theta = 2 tan theta /(1+tan2theta)

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  6. sin 2x identity proof
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