Question

how to construct 30 degree​

Answer 1

Answer:

A Standard adult mattress is about 72 inches long. To achieve a 30 degree angle you would need to raise the head of the bed about 41 inches... or you can sleep on one of our adult wedges that only raise your upper body to a 30 degree angle. We also have wedges with small and greater degrees.

Answer 2

Answer:

first of all draw a line then make a 60°angle then take it's half it's 30°This construction works by creating a rhombus. Its two diagonals form four 30-60-90 triangles.