Inverse Sin, Cos, Tan

[Malice]

Is there anyway to get MMF2 to calculate the inverse of the sin, cos, or tan of a value? I need to know the angle, I already have what it would equal when Sin is applied.

[uprize]

cant you just use simple math? Work out sin or cos and minus by 180 or 360 or whatever

[Atom]

Do you mean as in upsidedown sin? or with a phase offset etc?

To do a basic invert do something like -1*Sin(value) which would do a basic invert. If not i think aSin(value) is the inverted sin function but im probably wrong.

[drnebula]

You can find the inverse functions of sine, cosine, and tangent under Special / Sine and cosine, called arc sine, etc.
Steve

[LB]

I know what he means, like on some TI Calculators you can get Sin^-1(value) and that will tell you what you have to enter in regular sin to get that value, it only accepts between -1 and 1. I really don't see why MMF2 doesn't have such a thing! D:

There are
Sin^-1(value)
Cos^-1(value)
Tan^-1(value)
which need to be added.

[Czentnar]

Drnebula and Atom answered the question.

[Malice]

Thanks so much, guys. You really know your stuff.

aSin worked perfectly.

What's this "special" you speak of? Is that not a button in the expression editor? I'm using the demo version so it may not be included.

[drnebula]

When you are in the expression editor (for example, when you are setting the value of a counter), click on Retrieve Data From An Object. Then right click on the two monitors with a ? mark icon, which has a tooltip named Special, choose Sine and Cosine, and you will see the arc (or inverse) selections.
Steve

[LB]

My problem is that these are NOT the same as reverse sin/cos/tan. They are some other thing, and aren't acting the same as real sin/cos/tan^-1() at all! :eek:

[drnebula]

LB,

Could you be more specific in how they are not acting like the real sin-1. These inverse functions will give the answer in degrees. Perhaps you are expecting the answer in radians?

So, for example, the sin(30)= 0.5 and the inverse sin of 0.5 will give you 30. And pi radians = 180 degrees.

Steve