rahem61 rahem61
  • 01-07-2017
  • Mathematics
contestada

the law of cosine is c2 = a2 + b2 – 2ab cos C. find the value of 2ab cos C

Respuesta :

Аноним Аноним
  • 01-07-2017
add  2ab cos C to both sides of the '=':-

c2 + 2ab cos C = a2 + b2

now subtract c2 from both sides:-

2ab cos C = a2 + b2 - c2
Answer Link
cawinterf cawinterf
  • 06-12-2020

Answer: 37

Step-by-step explanation:

Answer Link

Otras preguntas

Please HELP!!- Harrison St, Thomas St, and Denny Way are parallel. On Broad St, the distance between Mercer St and Denny Way is 0.7 miles. The distance between
Roku rolls 5 fair, 6-sided dice all at once. What is the probability that he rolls all 1s? a. 1/6​ b. (1/6​)⁵ c. 1/36​ d. 1/216​
factorize 2x^4-x^3-6x^2+7x-2
i almost give you the same experience as time travel what am i
Show that the set of all elements of the form (x²y, x³z, 2xy - z), where x, y, z ∈ ℝ, is a subspace of ℝ³.
In the diagram below, the number in each box is the sum of the two numbers below it work out the missing numbers for boxes A,B and C Pls Answer them all
Define network list the elements of network
How much radiaton does a modern day phone have?+does it harm the human body?​
What is 30 6/5 simplified
Babur defeated __________ in the year 1528 CE.