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 :

sqdancefan sqdancefan

02-04-2018

2ab·cos(C) = a² +b² -c²
.. = 4² +3² -2²
.. = 16 +9 -4
.. = 21 . . . . . . . matches selection B

Answer Link

drrpepper drrpepper

26-10-2020

Answer:

b 21

Step-by-step explanation:

Answer Link

Otras preguntas

how can I use multiple representations to indicate positive and negative values

What is 5000 one tenth of?

a=(vf-vi)/t solve for tsolve for vi solve for vf

If lies in the quadrant IV. What can be the value of cos ?

The 10th and the 20th term of an arithmetic sequence are 10 and 40, respectively. Find its 100th term.

For the fair the organizers ordered 32 rolls of tickets each roll of tickets has 100 tickets how many tickets were ordered in all?

What's the algebraic expression of "4 times a number cubed decreased by 7"?

What motivated Europeans to begin looking to distant lands?

7.20 7.2 greater equal or less

Which statement is true? 500 is 10 times as much as 50 500 is one tenth as much as 50