fx-82MS fx-82TL fx-9860GII TI-83
cos
On a Casio calculator you can calculate the cosine
cos
Example 1
To calculate cos (0) = 1
cos 0 = cos 0
1.
Example 2
To calculate cos (π) = −1
SHIFT π cos EXP = cos π
-1.
Example 3
To calculate cos (180°) = −1
cos 1 8 0 = cos 180
-1.
Example 4
To calculate cos (½π) = 0
SHIFT π cos · 5 EXP = sin .5π
0.
Example 5
To calculate sec (0) = 1
cos 0 = x⁻¹ = Ans⁻¹
1.