6. Bobby was proving the law of cosines and reached a point where he had the equation 6² = c² sin² (B) + c² os² (B) + a² — 2ac cos(B). - COS Which of the following steps are needed to complete the proof? Select all that apply. Foil for b² =h² + a² - 2ax + x². Factor c² for b² = c² [sin²(B) + cos²(B)] + a² − 2ac cos(B). Use the Pythagorean theorem to result in b² = h² + (a − x)². - Use the trigonometric identity sin²+ cos² = 1 for b² = c² + a² - 2ac cos(B).
6. Bobby was proving the law of cosines and reached a point where he had the equation 6² = c² sin² (B) + c² os² (B) + a² — 2ac cos(B). - COS Which of the following steps are needed to complete the proof? Select all that apply. Foil for b² =h² + a² - 2ax + x². Factor c² for b² = c² [sin²(B) + cos²(B)] + a² − 2ac cos(B). Use the Pythagorean theorem to result in b² = h² + (a − x)². - Use the trigonometric identity sin²+ cos² = 1 for b² = c² + a² - 2ac cos(B).
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°.
Related questions
Question
![6. Bobby was proving the law of cosines and reached a point where he had the equation
b² = c² sin² (B) + c² cos² (B) + a² − 2ac cos(B).
-
Which of the following steps are needed to complete the proof? Select all that apply.
Foil for 6² h² + a² - 2ax + x².
=
Factor c² for b² = c² [sin² (B) + cos² (B)] + a² - 2ac cos(B).
Use the Pythagorean theorem to result in 6²
=
Use the trigonometric identity sin²+ cos²
h² + (a − x)².
1 for b² = c² + a² - 2ac cos(B).
=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3ceda4a0-dfae-47b7-a55a-538f3c6315f9%2F40b6d200-33ad-476b-8f4a-1d3a72ed722c%2Fc14dqu5_processed.png&w=3840&q=75)
Transcribed Image Text:6. Bobby was proving the law of cosines and reached a point where he had the equation
b² = c² sin² (B) + c² cos² (B) + a² − 2ac cos(B).
-
Which of the following steps are needed to complete the proof? Select all that apply.
Foil for 6² h² + a² - 2ax + x².
=
Factor c² for b² = c² [sin² (B) + cos² (B)] + a² - 2ac cos(B).
Use the Pythagorean theorem to result in 6²
=
Use the trigonometric identity sin²+ cos²
h² + (a − x)².
1 for b² = c² + a² - 2ac cos(B).
=
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