Mathwords: Half Angle Identities
for tangent u/2, it shows two formulas.
how do you know which one to use? or do they equal the same thing
1-cos u / sin u
or
sin u / 1 + cos u
Mathwords: Half Angle Identities
for tangent u/2, it shows two formulas.
how do you know which one to use? or do they equal the same thing
1-cos u / sin u
or
sin u / 1 + cos u