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| -rw-r--r-- | lib/Math/Trig.pm | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Math/Trig.pm b/lib/Math/Trig.pm index 9ff016fb1d..cd1735618a 100644 --- a/lib/Math/Trig.pm +++ b/lib/Math/Trig.pm @@ -425,8 +425,8 @@ based on a sphere surface. The radius of the sphere is B<rho>, also known as the I<radial> coordinate. The angle in the I<xy>-plane (around the I<z>-axis) is B<theta>, also known as the I<azimuthal> coordinate. The angle from the I<z>-axis is B<phi>, also known as the -I<polar> coordinate. The `North Pole' is therefore I<0, 0, rho>, and -the `Bay of Guinea' (think of the missing big chunk of Africa) I<0, +I<polar> coordinate. The North Pole is therefore I<0, 0, rho>, and +the Gulf of Guinea (think of the missing big chunk of Africa) I<0, pi/2, rho>. In geographical terms I<phi> is latitude (northward positive, southward negative) and I<theta> is longitude (eastward positive, westward negative). |