Evaluate the expression: arctan(-sqrt3) and Arctan(-sqrt3). I don't understand what they mean by evaluate and how these two functions are different.

Question

zepdrix · Answer

This is for trigonometry?
Have you learned about the unit circle and the special trig functions?

anonymous · Answer

Yes, I figured out arctan(-sqrt3) I just don't know how it differs from Arctan(-sqrt3)

anonymous · Answer

And yes it's for trig. :)

zepdrix · Answer

Yah I'm not really sure what the difference is.. that's weird :(

The range of arctan is restricted to the first and 4th quadrants.
So, $$\Large\rm \arctan(-\sqrt3)=-\frac{\pi}{3}$$yes?

anonymous · Answer

Yes! That's what I got

zepdrix · Answer

I dunno what the capital A is all about.. maybe they want some principle value between 0 and 2pi or something....

So if we spin around the circle we land at 5pi/3

Are you entering these values online? :d can we make some guesses?

anonymous · Answer

No! Those are the values I got from a calculator!