Why are the cos-1 and sin-1 functions not working on my calculator? The answer always comes up as a math error and I don't know why. I'm definitely inputting everything right. -
Hyperbolic Trig on TI 84 Graphing Calculator - YouTube
Solved Derive the following formulas for the inverse | Chegg.com
Inverse Trigonometric Functions Calculator
Hyperbolic Functions by Scientific Calculator - YouTube