yodeamisstefinabde
yodeamisstefinabde yodeamisstefinabde
  • 02-09-2016
  • Mathematics
contestada

If in triangle ABC, a=5, b=6 and c=8, then cos A is...

Respuesta :

meerkat18
meerkat18 meerkat18
  • 08-09-2016

In a triangle, the nomenclature is that a variable side a is opposite of the angle A. we can use the cosine law to determine the value of cosine A. 
a2 = b2 + c2 -2bc cos a25 = 36 + 64 - 2*6*8 * cos acos a = 25/32 
Answer Link

Otras preguntas

Ads it means to arrange change fit or shape. Which word from the entry could be used in place of the word adapt as it is used in the following sentence . The li
53% of 539 this is a math problem the answer is supposed to be a whole number and you are supposed to estimate
Which of the following causes of death can be affected by your eating habits? heart disease cancer suicide homicide motor vehicle accidents
Which statement best explains Why the papel towel remained dry?
which of the following is an example of the barter system
How did the Renaissance lead to Protestant reformation
True/false Prohibition was backed by many groups of the United States' religious community.
Natural abilities that people possess are called:
what makes noble gases stable
An iguana at a pet store is 5 feet long. Measurement for iguana cages are given in inches. How many inches long is the iguana? GIVE YOU 100 POINTS LAT