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

How do you say "the feather pen" in French?

What is the amazon river used for?

What is vaporization?

a circular mirror has a diameter o 12 inches. what is the area , in square inches , of the mirror

a wave creates a strong undertow. what kind of wave is it? a. tsunami b.swell c. long shore d. deep water

teams of four are competing in a quarter mile relay. each runner must run the same exact distance. what is the distance each teammate runs?

4n^2 -15n+9 factor completely

In rabbits, black fur is dominant over white fur. Show the cross of a heterozygous black male with a homozygous white female.

When Germany began World War II in 1939, a secret agreement with the U.S.S.R. allowed Soviet troops to __________. A) occupy eastern Poland B) annex eastern Cze

Imagine an earthquake creates a chasm that separates a population of squirrels.The two populations of squirrels evolve into two separate species.What is the nam