Prove that e^(iθ) = cos θ + i sin θ

eljota38 · Mar 16, 2013

Can anyone prove me this stament please.

gnrlies00 · Mar 16, 2013

the proof to Euler's formula

e^iθ=cosθ+isinθ

is using taylor series for the exponential function

For any complex number z, we define e^z by

e^z=[itex]\sum[/itex][itex]\frac{z^n}{n!}[/itex].

eljota38 · Mar 16, 2013

thanks a lot I think you were a great help

micromass · Mar 16, 2013

Please read this: https://www.physicsforums.com/blog.php?b=3588

Prove that e^(iθ) = cos θ + i sin θ

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