Euler's Formula (e^(iθ) = cos θ + i sin θ)
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e^(iθ) = cos θ + i sin θ
What each symbol means
| Symbol | What it stands for |
|---|---|
| θ | Real angle in radians (usual convention in JEE) |
| e^{iθ} | Point on unit circle at angle θ from positive real axis |
When to use this
θ ∈ ℝ. Extends polar form: z = re^(iθ) with r = |z|, θ = arg z.