1. ## Radians into my Calculator?!?

hey there

My question is: why is it that when you have a radian value expressed as a decimal you do not need to specify it as a radian value in your calculator.

So for example:

Example: if the value was $\displaystyle \pi/8$ I would need to specify it was radians. But a value like 0.6 doesn't have to be specified...but it is still in radians.

Can someone explain this to me please

2. ## Re: Radians into my Calculator?!?

Originally Posted by Astar
My question is: why is it that when you have a radian value expressed as a decimal you do not need to specify it as a radian value in your calculator.
In the expression $\displaystyle \sin(\theta)$ the $\displaystyle \theta$ is a real number.
So the is no need to tell a calculator about real numbers. That is all a calculator knows. In fact, there are many who think that mathematics courses should abandon the so called degree as a totally archaic notion.

3. ## Re: Radians into my Calculator?!?

ok but why is it then that i have to specify radians if it is $\displaystyle \pi/6$ for example???

4. ## Re: Radians into my Calculator?!?

Originally Posted by Astar
ok but why is it then that i have to specify radians if it is $\displaystyle \pi/6$ for example???
You absolutely do no have to do that.
I suppose some of the simple calculators still have a degree/radian mode.
But they are really out of date.

EDIT: P.S.
Go to this website.
You change the value of $\displaystyle \frac{\pi}{3}$ without ever saying anything about radians.