CASTI-89 TITANIUM · CALC89
sec⁻¹(
Returns the angle whose secant is the given value, in the current angle mode. For standard values the angle is exact, for example a multiple of π.
Syntax
sec⁻¹(expr)
- Group
- Trigonometry
- Arguments
- Takes one value or expression.
- Availability
- Included
Example
| Input | Result |
|---|---|
| sec⁻¹(2) | π/3 |
Typing sec⁻¹(2) on the home screen and pressing ENTER returns π/3.
Related commands
- sin(Returns the sine of an angle, interpreted in the current angle mode.
- sinh(Returns the hyperbolic sine of a value.
- sinh⁻¹(Returns the inverse hyperbolic sine of a value.
- sin⁻¹(Returns the angle whose sine is the given value, in the current angle mode.
- tan(Returns the tangent of an angle, interpreted in the current angle mode.
- tanh(Returns the hyperbolic tangent of a value.
- tanh⁻¹(Returns the inverse hyperbolic tangent of a value.
- tan⁻¹(Returns the angle whose tangent is the given value, in the current angle mode.