Use sind, cosd, etc., instead of sin, cos, etc.

[singularitti]

It's more common to use degrees instead of radians in crystallography. Besides, sin and cos on floating point number is less accurate.

julia> sin(pi / 2)
1.0

julia> cos(pi / 2)
6.123233995736766e-17

julia> sind(90)
1.0

julia> cosd(90)
0.0

julia> tan(pi / 4)
0.9999999999999999

julia> tand(45)
1.0

julia> cot(pi / 4)
1.0000000000000002

julia> cotd(45)
1.0

julia> cos(pi)
-1.0

julia> sin(pi)
1.2246467991473532e-16

julia> cosd(180)
-1.0

julia> sind(180)
0.0