Given a triangle ABC, which among the following shows the Laws of Cosine? * i. (AC)? = (AB)² + (BC)² – 4 (AB) (BC) cos A ii. (BC)? = (AB)² + (AC)² – 4(AB) (AC) cos B (BC) +(AC)²-(AB)² iii. cos C = (АC( ВС) O i and ii O ii and i O i and iii O i, ii, and i
Given a triangle ABC, which among the following shows the Laws of Cosine? * i. (AC)? = (AB)² + (BC)² – 4 (AB) (BC) cos A ii. (BC)? = (AB)² + (AC)² – 4(AB) (AC) cos B (BC) +(AC)²-(AB)² iii. cos C = (АC( ВС) O i and ii O ii and i O i and iii O i, ii, and i
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 16E
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Question
![Given a triangle ABC, which among the following shows the Laws of
Cosine? *
i. (AC)² = (AB)² + (BC)² – 4 (AB) (BC) cos A
ii. (BC)? = (AB)² + (AC)² – 4 (AB)(AC) cos B
(BC)²+(AC)²-(AB)²
(AC)(BC)
iii. cos C =
O i and ii
O ii and i
O i and iii
O i, ii, and ii](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdd3b1ed4-a43d-465c-8bc3-f8641f0201ee%2F244a3fc0-f277-4433-88f6-c61d47641712%2Fq5fivaa_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Given a triangle ABC, which among the following shows the Laws of
Cosine? *
i. (AC)² = (AB)² + (BC)² – 4 (AB) (BC) cos A
ii. (BC)? = (AB)² + (AC)² – 4 (AB)(AC) cos B
(BC)²+(AC)²-(AB)²
(AC)(BC)
iii. cos C =
O i and ii
O ii and i
O i and iii
O i, ii, and ii
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