E to 846 110° 110° A B 70 NOT TO SCALE In the pentagon ABCDE, angle EAB = angle ABC 110° and angle CDE = 84°. Angle BCD= angle DEA =x°. (iii) This pentagon also has one line of symmetry. Calculate angle ADB. DA = DB DAB = DBA DBA = 110-31=79 -ADR + 79+79 = 180 ADB = 180-158 Answer(a)(iii) Angle ADB = ADB = 22 22
E to 846 110° 110° A B 70 NOT TO SCALE In the pentagon ABCDE, angle EAB = angle ABC 110° and angle CDE = 84°. Angle BCD= angle DEA =x°. (iii) This pentagon also has one line of symmetry. Calculate angle ADB. DA = DB DAB = DBA DBA = 110-31=79 -ADR + 79+79 = 180 ADB = 180-158 Answer(a)(iii) Angle ADB = ADB = 22 22
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.1: Angles
Problem 1E
Question
Is the solution correct?Why or why not?
Transcribed Image Text:E
to
846
110°
110°
A
B
70
NOT TO
SCALE
In the pentagon ABCDE, angle EAB = angle ABC 110° and angle CDE = 84°.
Angle BCD= angle DEA =x°.
(iii) This pentagon also has one line of symmetry.
Calculate angle ADB.
DA = DB
DAB = DBA
DBA = 110-31=79
-ADR + 79+79 = 180
ADB = 180-158
Answer(a)(iii) Angle ADB =
ADB = 22
22
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