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
ki77a [65]
3 years ago
7

Use the law of cosines to find the balue of cos 0 . Round to answer to two decimal places

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Using the law of cosines then cosΘ is the following quotient

cosΘ = \frac{a^2+b^2-c^2}{2ab}

where a = 5.8, b = 10.5 and c = 10.9

cosΘ = \frac{5.8^2+10.5^2-10.9^2}{2(5.8)(10.5)}

        = \frac{33.64+110.25-118.81}{121.8}

        = \frac{25.08}{121.8} = 0.21 → C

You might be interested in
Ralph bought some oranges. The weight of the oranges was 2.5 kilograms. How many grams is this?
horsena [70]

Answer:

2500 grams

Step-by-step explanation:

convert 2.5 kilograms to grams by multiplying by 1000

= 2.5×1000= 2500grams

7 0
2 years ago
Fill in the blanks
brilliants [131]

Answer:

1. 100 which Is the easier one

2. 5

5 0
2 years ago
How do I find the area?
nikitadnepr [17]

Answer:

The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square, you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.

5 0
3 years ago
Read 2 more answers
What is the answer to 3-3x6+2
AlladinOne [14]
The answer must be -52 because I added parenthesis around -3 × 6 so it won't confuse people. I multiplied -3 and 6 and got -18. Then I multiplied -18 and 3 and got -54. I add -54 and 2 and got -52. Since there's more of negative than positive, I subtracted and got -52. Hope this helps :)
4 0
3 years ago
Read 2 more answers
Notes on isosceles triangles, base angles and notes on the diagonals thanks :D
rjkz [21]
Hey,
In isosceles triangles there r two equal sides .
Base angles is usually used for isosceles triangles ....
Diagonals are two lines which intersect each other...
8 0
3 years ago
Other questions:
  • How would you get -24 as the answer?
    12·2 answers
  • (6x 7)(6x-7) determine each product
    10·1 answer
  • The perimeter of a rectangular garage is 28 m it is 5 m wide how long is it
    14·1 answer
  • If i have a 20 dollar bill and a candy is 4 how many can i buy
    13·2 answers
  • If x+3/3 = y+2/2 , then x/3=?
    13·1 answer
  • Zoe just lit a new candle and then let it burn all the way down to nothing. The length
    14·2 answers
  • What are three expressions equivalent to : 2g+10h?. <br> PLEASE!!!!!
    5·1 answer
  • Find the total number of unit cubes that fill the entire prism
    13·1 answer
  • The largest Prime number less than 100 is ?
    7·2 answers
  • If m∠12 = 117° and m∠5 = 51°, find each measure.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!