Finding Angle Between Two Points - Angles Worksheet With Answers Page 2

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Answer Key
Finding Angle between Two Points
Name:
Calculate the angle of the circle relative to (0,0).
A n s w e r s
First find the slope.
30.96°
(y
-y
)÷(x
-x
) = m
1.
2
1
2
1
(4,5)
(4,5)
(5-0)÷(4-0) = 1.25
20.56°
2.
Then find the arc tangent (aka. inverse
83.66°
tangent) of the slope.
3.
arctan(1.25) = 51.34°
45.00°
4.
1)
2)
3)
(1,9)
41.63°
5.
45.00°
(5,3)
(8,3)
6.
6.34°
7.
45.00°
8.
4)
5)
6)
33.69°
(9,8)
9.
(5,5)
45.00°
10.
(2,2)
63.43°
11.
56.31°
12.
7)
8)
9)
(6,6)
(6,4)
(9,1)
10)
11)
12)
(8,8)
(3,6)
(4,6)
1-10 92 83 75 67 58 50 42 33 25 17
Math
9
11-12 8
0

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