What is the relationship between each of these pair of angles : 8 and 5

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

What is the value of x in the following equation? -3x-2=2x+8

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?