In Example 4, change /4 to /6. Data from Example 4 Using Eq. (21.41), we can transform the polar coordinates (4, /4) into the rectangular

In Example 4, change π/4 to π/6.

Data from Example 4

Using Eq. (21.41), we can transform the polar coordinates (4, π/4) into the rectangular coordinates (2√2,2√2), because

See Fig. 21.107.

x = 4 cos = 4 4 2 = 22 and T y = 4sin = 4(2)= = 22