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

we can determine the velocity of a wave when given the frequency and the 1-amplitude 2-equilibrium 3-trough 4-wavelength
The graph shows nicks bike ride home from his grandparents. What dose the graph represent. Make sure to look at the picture
Let N cap represent the direction horizontally north, NE cap represent northeast (halfway between north and east), and so on. Each direction specification can b
What is the falling action of the great gatsby?
can someone please help me with this question!!
y-4 = – 7(x – 6) I need the answer
Jennifer’s soccer league is quite large. It includes twelve teams, and each team has approximately fifteen members. Jennifer is very popular and has the most ti
Which of the following is an historical example of a cultural push factor? a. The United States actively sought Mexican agricultural laborers during and after
Which of the 4 options is a function? Need help quick
On the star maps, the constellation names are in upper case letters and bright stars that have proper names are printed in lower case letters. On the summer sta