- #1
zorro
- 1,384
- 0
I use a Casio fx-991MS calculator.
I observed this strange thing during some calculations.
Setting up the calculator in radian mode, I found out the sines of various angles (multiples of π) display showed 0 for lower values.
However when I entered angles from 1201π onwards, the answers were like-
sin(1201π) = 1.59 x 10-9
sin(1202π) = 4.82 x 10-9
sin(1203π) = -1.23 x 10-9
sin(1204π) = -2.36 x 10-9
I got 0 for sin(1220π) and some other numbers but mostly unexpected values for higher numbers.
I would like to find out if there is any different method in which a calculator finds out the value of sine of multiples of π in radian mode.
I observed this strange thing during some calculations.
Setting up the calculator in radian mode, I found out the sines of various angles (multiples of π) display showed 0 for lower values.
However when I entered angles from 1201π onwards, the answers were like-
sin(1201π) = 1.59 x 10-9
sin(1202π) = 4.82 x 10-9
sin(1203π) = -1.23 x 10-9
sin(1204π) = -2.36 x 10-9
I got 0 for sin(1220π) and some other numbers but mostly unexpected values for higher numbers.
I would like to find out if there is any different method in which a calculator finds out the value of sine of multiples of π in radian mode.