I have researched this area a little bit and now I am a little worried because three different websites have gave me three different answers. Some functions matched, but others didn't.(adsbygoogle = window.adsbygoogle || []).push({});

My general concensus is

inverse Sin= 1 and 4 quad

inverse Cos= 1 and 2 quad

inverse tan= 1 and 4 quad

inverse cotangent = 1 and 2 quad

inverse secant= 1 and 2 quad

inverse cosecant= 1 and 4 quad

More importantly is there a quick way to verify this in your calculator?

I tried giving random angles for the inverse functions in my calculator to the so called undefined quadrants for the directed inverse functions but I am not getting a light bulb here.

So maybe a little help?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: On which quadrants are each of the six inverse trig functions defined?

**Physics Forums | Science Articles, Homework Help, Discussion**