I've noticed that while changing the answers into the form . Is it because any angle differring than the one we have previously found has exactly the same value?
I've noticed that while changing the answers into the form . Is it because any angle differring than the one we have previously found has exactly the same value?
Correct. And as I said, we say the principal argument is defined for .
Got it! , , and , so no problem. But , , and . But has the same value as , and , so we take that. has the same value as , and , so we take that. And has the same value as , and , so we take that.