- #1
badtwistoffate
- 81
- 0
When is th ebest time to use it and what are some good rules of thumb for it?
TD said:Instead of the tangent-secans relation, you can also use the fact that [itex]\cosh ^2 x - \sinh ^2 x = 1[/itex]. (cp the law with sin and cos, but here with a - instead of a +)
TD said:Instead of the tangent-secans relation, you can also use the fact that [itex]\cosh ^2 x - \sinh ^2 x = 1[/itex]. (cp the law with sin and cos, but here with a - instead of a +)