Calculates in Radians even tough I set it to Degree

sotanyibalint01 shared this problem 3 years ago

New

The trigonometric calculations are in radians. It is by default set to Degrees, but still calculates in Radians. Switching it out and then back does not fix it either.

The same problem

Comments (4)

sotanyibalint01 ● 3 years ago

The problem occured on Scientific Calculator site ( https://www.geogebra.org/sc... )

Reply URL

jumera ● 3 years ago

Which calculation ? Please, give an example (or a screenshot)

Reply URL

sotanyibalint01 ● 3 years ago

The calculation was: sin(9 / 7)

the result always stayed in radians, regardless of what angle unit I chose in the settings menu.

URL

jumera ● 3 years ago

yes

It is the same in all GeoGebra apps

set to degrees :

sin(30°) is 0.5

but sin(60/2) or sin(2*15) is -0.98...

you have to write sin(60°/2) or sin(2*15°)

In your example : sin(9°/7)

So, even you set degrees, you have to write "°"

(perhaps you have noticed that when you write sin(30) GeoGebra add the ° : so it is sin(30°) and the result is 0.5)

It doesn't work as a calculator (CASIO, TI,...), but it works as mathematics !

sin(30°) = 0.5 and sin(30) = -0.98

URL