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July 8, 2020 4:58 pm 15 pts
In Euler's formula cos (theta)+isin(theta), why we write imaginary no.(i) with sin and not wit cos?
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• Aritra Dey
Any complex number z = x + iy can be written as z=rcos(theta)+rsin(theta)=re^i(theta)........if you write z=ix+y then you can use iota with cos(theta) but it is a convention to use...
e^(i×theta)=sin(theta)+cos(theta( doesn't hold true for theta=0 Hence we can't write like this.