What is the value of the square root of 9 when evaluated using the characteristics of a square root function?
+
What is the limit as x approaches 3 of (x^2 - 2x + 5)/(x - 3) + (4x - 7)/(x^2 - 9) ?
+
What is the length of an unknown side of a triangle, using the sine law, if the angle measures 30 degrees, the side opposite the angle has length 5, and the sine of another angle is 0.5?