Answered

Find the best answers to your questions at Westonci.ca, where experts and enthusiasts provide accurate, reliable information. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

- Find the length of side C. - A = 10, B = 3, C= 120 degree - Law of Cosines: c^2 = a^2 b^2 - 2ab*cosC - C = [?]

Find The Length Of Side C A 10 B 3 C 120 Degree Law Of Cosines C2 A2 B2 2abcosC C class=

Sagot :

sqdancefan

Answer:

  11.8

Step-by-step explanation:

You want side c of obtuse ∆ABC with a=10, b=3, C=120°.

Law of cosines

The given values can be used in the given law of cosines formula to find ...

  c² = a² +b² -2ab·cos(C)

  c² = 10² +3² -2(10)(3)·cos(120°) = 100 +9 -60(-0.5) = 139

  c = √139 ≈ 11.8

The length of side c is about 11.8 units.

View image sqdancefan
We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.