shakirabreeding
shakirabreeding shakirabreeding
  • 02-04-2018
  • Mathematics
contestada

The law of cosines a2+b2-2abcosC=c2. Find the value of 2abcosC.

The law of cosines a2b22abcosCc2 Find the value of 2abcosC class=

Respuesta :

dpokharnaotzjgn
dpokharnaotzjgn dpokharnaotzjgn
  • 02-04-2018
A = 4
B = 3
C = 2

We need to find cos(C)

[tex]4 = 16 + 9 - 2(2)(3)(cos(C)) [/tex]
[tex]-21 = -12 * cos(C)[/tex]
[tex]cos (C)=  1.75[/tex]

The answer is [tex]2 * 3 * 4 * 1.75 [/tex] = 42





Answer Link

Otras preguntas

crown help me geometry points
How many bones are in an adult's body?
Tell how electricity affected life in New York City
When looking for a car to buy, what can you learn from classified ads?
Suppose the population of a town is 100,000 in 2014. The population increases at a rate of 4.5% every year. What will be the population of the town in 2020? Rou
When did the soviets get the atomic bomb?
If the opportunity costs of production for two goods is different between two countries, then
Which of the following pathways produces the most nadh and the least atp?
How old was clinton when elected as president?
Was mr. martin from a northern state or a southern state?