fx-82MS fx-82TL fx-9860GII TI-83
TAN⁻¹
On a TI calculator you can calculate the inverse tangent
TAN⁻¹ G 2nd TAN
or via the CATALOG as
CATALOG ⎵
2nd 0 ►tan⁻¹( ENTER
Example 1
To calculate tan-1(0) = 0
TAN-1 G 2nd TAN 0 ENTER tan⁻¹(0 0
Example 2
To calculate tan-1(1) = 45°
TAN-1 G 2nd TAN 1 ENTER tan⁻¹(1 45