Euler's Formula - Natural & Formal Sciences - Mathematics & Logic Dictionary Definition Identity in complex analysis expressing the complex exponential in terms of trigonometric functions: e^{iθ} = cos θ + i sin θ for real θ, extendable to complex arguments by analytic continuation.
Euler's Formula - Natural & Formal Sciences - Mathematics & Logic Dictionary Definition Identity in complex analysis expressing the complex exponential in terms of trigonometric functions: e^{iθ} = cos θ + i sin θ for real θ, extendable to complex arguments by analytic continuation.