For any triangle ABC with angles with positive measures mZA, mZB, and mZC and side lengths of a, b, and c with the relative positions as shown in the diagram below select the following statements that are true. In other words, select all of the following that represent either form of the Law of Cosines. B A Select all the equalities that are true. Oa? = 6° + c² – 2bc - cos(m/A) a? – 6? – c? | cos(m/A) : -2bc c2 – a? – b? cos(m/C) = cos(m/A) cos(m/B) - 2ab a b cos(m/B) cos(m/C) O2 = a² + b? – 2ab · cos(m/C) - O62 = a? + c 2ac · cos(m/B) cos(mLA) cos(m/C) - a 62 – a? – c? O cos(m/B) = - 2ac

For any triangle ABC with angles with positive measures mZA, mZB, and mZC and side lengths of a, b, and c with the relative positions as shown in the diagram below select the following statements that are true. In other words, select all of the following that represent either form of the Law of Cosines. B A Select all the equalities that are true. Oa? = 6° + c² – 2bc - cos(m/A) a? – 6? – c? | cos(m/A) : -2bc c2 – a? – b? cos(m/C) = cos(m/A) cos(m/B) - 2ab a b cos(m/B) cos(m/C) O2 = a² + b? – 2ab · cos(m/C) - O62 = a? + c 2ac · cos(m/B) cos(mLA) cos(m/C) - a 62 – a? – c? O cos(m/B) = - 2ac

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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Question

For any triangle ABC with angles with positive measures mZA, mZB, and mZC and side lengths of a, b, and c with the relative positions as
shown in the diagram below select the following statements that are true.
In other words, select all of the following that represent either form of the Law of Cosines.
B
A
Select all the equalities that are true.
Oa? = 6° + c² – 2bc - cos(m/A)
a? – 6? – c?
| cos(m/A) :
-2bc
c2 – a? – b?
cos(m/C) =
cos(m/A)
cos(m/B)
- 2ab
a
b
cos(m/B)
cos(m/C)
O2 = a² + b? – 2ab · cos(m/C)
-
O62 = a? + c
2ac · cos(m/B)
cos(mLA)
cos(m/C)
-
a
62 – a? – c?
O cos(m/B) =
- 2ac

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