I Can't Convert Sin(x) to Degrees

[Shoney45]

Homework Statement

I'm working through a Law of Sines problem. And along the way, I have discovered that sin(C) = .9796.s

I had thought from my trig days that I could find the angle whose sine is .9796 by finding the arcsin of.9796. But when I load this into my TI89, all it does is return the arcsin of .9796...except that .9796 is now in the form of a fraction.

So for the life of me, I can't figure out how to convert the sine of an angle into degree form.

 

[MATLABdude]

You're probably in radians mode. Change the calculator mode to degrees and it should work.

Barring that, you can Google for the exact phrase (and without quotation marks):
arcsin 0.9796 in degrees

This triggers Google's built in calculator.

 

[Shoney45]

You're probably in radians mode. Change the calculator mode to degrees and it should work.

Barring that, you can Google for the exact phrase (and without quotation marks):
arcsin 0.9796 in degrees

This triggers Google's built in calculator.

I've already toggled between degrees and radians, and it doesn't change anything. The problem is that I've got to get thsi figured out on a calculator because I've got to take the Praxis test and can't appeal to Google during the test.

 

[MATLABdude]

This might be dumb, but did you try arcsin 0.9796? And turning off exact mode?

 

[SteamKing]

When all else fails, read the instructions.

 

[Shoney45]

When all else fails, read the instructions.

I did read the instructions. You'll notice that I input the value that = sin(x) such that sin^(-1)(x) should equal some value. And all my unit was outputting was sin(a big-arse fraction). So that was when I went to the internet for help.

When all else fails, read the original post first.

 

[Shoney45]

This might be dumb, but did you try arcsin 0.9796? And turning off exact mode?

Golly, I'd sure try that if my unit was still failing me. But I reset the whole unit, and everything works fine now.

Thanks for your input folks.

 

[MATLABdude]

Glad to hear it worked. I can't tell if that was sarcastic or not, but this was an issue with the original firmware when I first bought mine a decade ago.

 

[Shoney45]

Glad to hear it worked. I can't tell if that was sarcastic or not, but this was an issue with the original firmware when I first bought mine a decade ago.

No sarcasm towards you at all...only to the guy who himself was sarcastic. I love this site for the help I am able to get from nice you folks. You guys around here are really great.