If the endpoints of AB have the coordinates A(9, 8) and B(-1, -2), what is the AB midpoint of ?
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You need to convert the cartesian coordinates to polar: This means we need to go from (x, y) --> (r, angle)
We can covert, using the following formulas:
Find r:
r = 4
Now, find our angle:
Use the inverse of tan
Turn 30 degrees to radian
Answer = = C
