Calculator!

[Arpan]

The value of Sin(1), using the Visual Basic function Sin(number) is
0.841470984807897 but the Windows Calculator shows the value of Sin(1)
as 0.017452406437283512819418978516316! Not only this, even the cos,
sin & tan values of other numbers (except for 0), are different! Now
who is right & who is wrong?

Thanks,

Arpan

 

[Virgil Smith]

They are both right. The difference is that one expression uses radian
measure for the angle and the other uses degrees. I.e., the sine of 1 radian
= 0.8414....... and the sine of 1 degree = 0.017..... Same for the the
other trig functions.

 

[George Hester]

You need to understand the difference between radians and degrees. Put the
calculator at radians after you hit 1 and then sin. You'll get what VB
says. You were doing 1 degree in the calculator while VB was telling you 1
radian. There are 2*pi ~ 6 radians in a circle where as there are 360
degress in a circle. Hence 1 radian is about 60 degrees.