Finding Angle Between Two Points - Angles Worksheet With Answers Page 12
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20Answer 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.
45.00°
(y
-y
)÷(x
-x
) = m
1.
2
1
2
1
(4,5)
(4,5)
(5-0)÷(4-0) = 1.25
56.31°
2.
Then find the arc tangent (aka. inverse
14.04°
tangent) of the slope.
3.
arctan(1.25) = 51.34°
48.37°
4.
1)
2)
3)
77.47°
5.
(4,6)
33.69°
6.
(2,2)
(4,1)
60.26°
7.
63.43°
8.
4)
5)
6)
(8,9)
(2,9)
14.04°
9.
(9,6)
40.60°
10.
69.44°
11.
12.53°
12.
7)
8)
9)
(4,7)
(3,6)
(8,2)
10)
11)
12)
(3,8)
(7,6)
(9,2)
1-10 92 83 75 67 58 50 42 33 25 17
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