DISCUSS DISCOVER PROVE WRITE [Hint: Find the area of triangle ABC in two different ways. You will need the following facts from geometry: 117. PROVE: Geometric Proof of a Double-Angle Formula Use the figure to prove that sin 20 = 2 sin 0 cos 0. An angle inscribed in a semicircle is a right angle, so LACB is a right angle. The central angle subtended by the chord of a circle is twice the angle subtended by the chord on the circle, so ZBOC is 20.] A B.
DISCUSS DISCOVER PROVE WRITE [Hint: Find the area of triangle ABC in two different ways. You will need the following facts from geometry: 117. PROVE: Geometric Proof of a Double-Angle Formula Use the figure to prove that sin 20 = 2 sin 0 cos 0. An angle inscribed in a semicircle is a right angle, so LACB is a right angle. The central angle subtended by the chord of a circle is twice the angle subtended by the chord on the circle, so ZBOC is 20.] A B.
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
Related questions
Question
![DISCUSS
DISCOVER
PROVE
WRITE
[Hint: Find the area of triangle ABC in two different ways.
You will need the following facts from geometry:
117. PROVE: Geometric Proof of a Double-Angle Formula Use
the figure to prove that sin 20 = 2 sin 0 cos 0.
An angle inscribed in a semicircle is a right angle, so
LACB is a right angle.
The central angle subtended by the chord of a circle is
twice the angle subtended by the chord on the circle, so
ZBOC is 20.]
A
B.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F526905eb-1cac-4a84-9bf3-aff99fa5aa81%2Fa38f8b3c-a34b-4c76-90fa-6f23b16f306b%2Flhcvyr_processed.png&w=3840&q=75)
Transcribed Image Text:DISCUSS
DISCOVER
PROVE
WRITE
[Hint: Find the area of triangle ABC in two different ways.
You will need the following facts from geometry:
117. PROVE: Geometric Proof of a Double-Angle Formula Use
the figure to prove that sin 20 = 2 sin 0 cos 0.
An angle inscribed in a semicircle is a right angle, so
LACB is a right angle.
The central angle subtended by the chord of a circle is
twice the angle subtended by the chord on the circle, so
ZBOC is 20.]
A
B.
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