Toán cơ bản Ví dụ

Tìm Góc Phần Tư (-4,-8)
(-4,-8)
Bước 1
The point is located in the third quadrant because x and y are both negative. The quadrants are labeled in counter-clockwise order, starting in the upper-right.
Góc phần tư 3
Bước 2
 [x2  12  π  xdx ]