If y varies directly with x and y=15 when x=5, what is the value of y when x=8?

If y varies inversely with x and y=12 when x=3, what is the value of y when x=2?

If y varies directly with x and inversely with z, and y=10 when x=5 and z=2, what is the value of y when x=10 and z=4?

A ladder is leaning against a wall. If the ladder is 10 feet long and forms a 60 angle with the ground, how far up the wall does the ladder reach?

Which of the following equations is used to find an angle in a triangle when the lengths of two sides and the angle between them are known?

A 10-foot ladder is placed against the wall of a building. The ladder touches the building 6 feet from its base. How far is the foot of the ladder from the building?

Which law states that the sides of a triangle are proportional to the sines of their opposite angles?