1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
velikii [3]
2 years ago
7

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

Mathematics
2 answers:
taurus [48]2 years ago
7 0
\bf a^2+b^2-(2ab)cos(C)=c^2\implies a^2+b^2-c^2=(2ab)cos(C)
Elina [12.6K]2 years ago
3 0

Answer:

We need a diagram please

Step-by-step explanation:

You might be interested in
Use rounding to estimate the product
sdas [7]

Answer:

The estimate of the product is about 35 answer C

Step-by-step explanation:

- We use rounding to estimate the product of two fractions

- The mixed number has whole number and fraction

- To round the mixed number we look to the fraction

- If the numerator is half or greater than half the denominator, then we

  add the whole number by 1 and cancel the fraction

- If the numerator is less than half the denominator, then we keep the

  whole number as it and cancel the fraction

- Ex: If the mixed number is 2\frac{3}{4}, 3 is more than

 half 4 then we will add 2 by 1 and cancel the fraction part, the

 mixed number 2\frac{3}{4} after rounding is 3

- Ex: If the mixed number is 5\frac{1}{4}, 1 is less than

 half 4 then we will keep 5 as it and cancel the fraction part, the

 mixed number 5\frac{1}{4} after rounding is 5

* Lets solve the problem

∵ In the part 4\frac{3}{4} 3 is more than half 4

∴ The rounding value of 4\frac{3}{4} is 5

∵ In the part 7\frac{2}{17} 2 is less than half 17

∴ The rounding value of 7\frac{2}{17} is 7

∴ 4\frac{3}{4}*7\frac{2}{17}=5*7=35

* <em>The estimate of the product is about 35</em>

6 0
3 years ago
I need help with this question!!!!!
Snowcat [4.5K]
The answer is D
y=1/4x-7
4 0
2 years ago
HELP SAVE ME I NEED U GIRL
sveta [45]

Answer:

pretty sure it would be 42 degrees. angle 3 and 7 would have the same value as well

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
4 to 8 = 15 to n Can someone show me the answer
melamori03 [73]

Answer:

n=30

Step-by-step explanation:

4         15

------ = --------

8           n

using cross products

4n = 8*15

4n = 120

divide by 4

4n/4 =120/4

n = 30

6 0
2 years ago
Could someone help me with this
slega [8]

Answer:

option b is correct answee

8 0
3 years ago
Other questions:
  • Pls help me asap I have algebra and I don’t get this
    9·1 answer
  • WILL GIVE BRAINLIST AND FIVE STARS IF ANSWER IS CORRECT FOR THIS!
    12·1 answer
  • 20 POINTS FOR THE FIRST PERSON TO ANSWER
    15·2 answers
  • Jocelyn said that the triangle below is not a right triangle. Her work is shown below. Explain what she did wrong and show Jocel
    14·1 answer
  • brian makes an investment in his company’s stock . what does the stock chart say about the stock price today? The down arrow ind
    15·1 answer
  • HELP
    9·1 answer
  • Find the value of the variable in the isosceles triangle. show your work plz
    5·1 answer
  • Find the second derivative of 2x^3-3y^2=8​
    8·1 answer
  • The Chang family puts up holiday lights around their isosceles trapezoidal window. They use 20 feet of lights to go around the f
    14·1 answer
  • Solve the following system of equations.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!