- #1

Darth Frodo

- 210

- 1

When finding [itex]\alpha[/itex] do you have to take the signs into account when finding tan[itex]^{-1}[/itex] x/a. Does it matter if a or x are negative?

Next question is about quadrants

1: [itex]\theta[/itex] = [itex]\alpha[/itex]

2: [itex]\theta[/itex] = [itex]\pi[/itex] - [itex]\alpha[/itex]

3: [itex]\theta[/itex] = -[itex]\pi[/itex] - [itex]\alpha[/itex]

4: [itex]\theta[/itex] = -[itex]\alpha[/itex]

Based on these (if correct) it seems that I should disregard the sign when finding [itex]\alpha[/itex].

Is this correct?