what is the radian measure of an angle whose sine is 0.8?

Question

primeralph · Answer

arcsin(0.8) with your calculator in rad

primeralph · Answer

if it's not in rad, multiply the arcsin by 180/pi

primeralph · Answer

(I like girls with smiles)

primeralph · Answer

Got it?

anonymous · Answer

Yes! Thank you very much. So, it says to find the radian measure of tangent -.25 now. Do I put in tan -.25 eeeerrr, am I doing this completely wrong? haha

anonymous · Answer

Sorry, I'm a lost one when it comes to trig.

primeralph · Answer

I got 3 questions:
do you have a calculator?
has anyone told you how pretty you are?
what kind of calculator is it?

anonymous · Answer

no. I've been getting by on a calc on my computer this entire year. haha and thank you!

primeralph · Answer

okay, you're using windows?

anonymous · Answer

yes.

primeralph · Answer

type -.25, then click on the button that says "inv", then you'll see "tan-1" where "tan" used to be.
Click that and you have an answer.

primeralph · Answer

got it?

anonymous · Answer

yup, thank you!

anonymous · Answer

$$\arcsin(0.8)=53,130102354$$
$$x=53,130\pi/180$$
$$x=0.295$$