leslieamartinez leslieamartinez

02-08-2017
Mathematics

contestada

ΔABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C?

Respuesta :

choixongdong choixongdong

02-08-2017

41*41 = 1681
40*40 = 1600
9* 9 = 81
so a^2 = b^2 + c^2
1681 = 1600 + 81
1681 = 1681 ...it's right triangle

CA = 41 = Hypo.
cosC = Adj / Hypo
cosC = BC / CA = 40/41

answer
cosC = 40/41

Answer Link

caballerosdaniel007 caballerosdaniel007

03-02-2020

Answer:

The correct answer is

C 40/41

Step-by-step explanation:

Answer Link

Otras preguntas

I have this project for a class, and it asks me for three reasons why battles happen in certain areas. I don't exactly get why the other one would be the reason

A local am radio station broadcasts at a frequency of 764 khz. calculate the energy of the frequency at which it is broadcasting. energy = kj/photon

what will Al’s charge be when it comes an ion

Mae Davis, after whom the theater is named, was a famous singer in our town in the 1920's. Which word is the relative pronoun in the sentence?

How did the cold war contribute the building of the berlin wall?

Use the passage to answer the question. We came to Palestine to do away with the helplessness of the Jewish people through our own endeavors. Therefore, you wil

A temporary suspension of the menstrual cycle normally occurs during

Which of the following enzymes serve as catalysts in metabolism? I. amylase II. lactase III. pepsin IV. polymerase

The rhythm of early notated music came from: A:improvisation B:the notation C:the words to the song D:the harmony E:the conductor

simplify 15r+7r+9r-7s