9) Find the measure of Angle BÁC
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
Use the circle rules to find the missing information
Transcribed Image Text:9)
Find the measure of Angle BAC
700
164°
O.
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Arial
11
BIUA
+
三 三三
E - E
1.
1
IDO 3 4
5.
16 II
6
60
60
B.
Central Angles are equal to the arc it intercepts.
Arc AB = Angle AQB, because AQB is a central angle.
Angle Relationships in Circles
MEASURE
OF ANGLE
VERTEX OF
THE ANGLE
DIAGRAMS
On a circle
Half the
measure of its
200
intercepted arc
1
120°
m21 = 60°
m22 = 100°
Inside a circle Half the sum of
the measures of
its intercepted
m21-극(44° + 86")
44
86
= 65°
arcs
Half the
difference of the
Outside a
circle
78
2 45*
125
measures of its
202
intercepted arcs
m21 = (202° – 78°) m22 = }(125° – 45°)
%3D
= 62
= 40°
MacBook
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