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explicate docs for make-rectangular and make-polar

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Spencer Florence 2018-11-15 15:22:03 -06:00
parent 331b383103
commit 2f74b6087d
1 changed files with 6 additions and 2 deletions
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8
pkgs/racket-doc/scribblings/reference/numbers.scrbl
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@ -709,14 +709,18 @@ In the two-argument case, the result is roughly the same as @racket[
@defproc[(make-rectangular [x real?] [y real?]) number?]{ @defproc[(make-rectangular [x real?] [y real?]) number?]{
Returns @racket[(+ x (* y 0+1i))]. Creates a complex number with @racket[x] as the real part
and @racket[y] as the imaginary part. That is, returns @racket[(+ x (* y 0+1i))].
@mz-examples[(make-rectangular 3 4.0)]} @mz-examples[(make-rectangular 3 4.0)]}
@defproc[(make-polar [magnitude real?] [angle real?]) number?]{ @defproc[(make-polar [magnitude real?] [angle real?]) number?]{
Returns @racket[(+ (* magnitude (cos angle)) (* magnitude (sin angle) Creates a complex number which, if thought of as a point,
is @racket[magnitude] away from the origin and is rotated
@racket[angle] radians counter clockwise from the positive x-axis.
That is, returns @racket[(+ (* magnitude (cos angle)) (* magnitude (sin angle)
0+1i))]. 0+1i))].
@mz-examples[#:eval math-eval @mz-examples[#:eval math-eval