How might this affect finding trig ratios

When finding the remaining trig ratios, how does how does the inclusion of something like:

0 < theta < pi / 2

or

0 < alpha , pi

affect the trig ratios that need finding.

Example of the kinds of problems I'm referring to:

Find the remaining ratios.
sin(theta) = (3 / 5), 0 < theta < pi / 2

It affects the quadrant in which your solution lies.

You can see how this works by remembering CAST.
C osine is positive in the fourth quadrant
A ll ratios are positive in the first quadrant
S ine is positive in the second quadrant
T angent is positive in the third qwuadrant