In the diagram above, the value of angles b + c is 

In △ABC above, BC is produced to D, |AB| = |AC|, and ∠BAC = 50°. Find ∠ACD.

In the diagram above, < PRQ = 90º, < QPR = 30º and |PQ| = 10 cm. Find y

What is the mode of the numbers 8, 10, 9, 9, 10, 8, 11, 8, 10, 9, 8, and 14?

The bearing of two points Q and R from a point P are 030º and 120º, respectively. If |PQ| = 12 m and |PR| = 5 m, find the distance QR.