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)² = (AB)² + (AC)² – 4 (AB) (AC) cos B (BC)²+(AC)²-(AB)2 iii. cos C = (АC)(ВС) O A. i and ii B. ii and iii C. i and iii D. i, ii, and ii
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)² = (AB)² + (AC)² – 4 (AB) (AC) cos B (BC)²+(AC)²-(AB)2 iii. cos C = (АC)(ВС) O A. i and ii B. ii and iii C. i and iii D. i, ii, and ii
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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