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
Novay_Z [31]
3 years ago
9

Show that b=7 Please help i have 10 minutes to answer

Mathematics
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

The value of Cos(60°) is ½

Step-by-step explanation:

B)as we know

b²=a²+c²-2ac.cos(b)

b=√5²+8²-2.5.8×cos(60°)

b=√25+64-80×½

b=√25+64-40

b=√89-40

b=√49

b=7 (proven)

You might be interested in
X2 + 8x + 6
Svetradugi [14.3K]
You could put the ‘+6’ at the start of the equation so it would read as +6(x2+8x) and then expand the bracket as you normally would so you would get x2x6 which would get you 12x and then 6x8x which would get you 48x and then you could group both numbers together as they’re like terms and your final answer would be 60x
6 0
3 years ago
Monica drinks 0.125 liters of milk during breakfast and 0.20 liters of milk after dinner everyday. Find the total amount of milk
pogonyaev

Answer:

A.  .325L

Step-by-step explanation:

All you have to do is had .125 with .20 to get your answer

4 0
3 years ago
Read 2 more answers
Question Progress<br> Decrease £250 by 15%
balandron [24]

Answer:

215 i guess

Step-by-step explanation:

8 0
3 years ago
Very easy answer but does any one know what C is
Pavel [41]
Answer: As the number of rides given by the taxi driver increased, the earnings of the taxi driver also increases.
7 0
3 years ago
Read 2 more answers
three friends go to the movies and split the total cost between them. the total cost is $13.05 for movie tickets and $10.26 for
lakkis [162]
Total cost = $13.05 + 10.26
= $23.31
Indivdual pay = $23.31 / 3
= $7.77 each
6 0
3 years ago
Read 2 more answers
Other questions:
  • A college student borrows $2,000 for 9 months to pay for a semester of school. If the interest is $123.75, find the monthly paym
    12·1 answer
  • The perimeter of Dawna's new flat screen television is 112 inches. The ratio of its length to width is 4:3. Write and solve an a
    12·1 answer
  • First person to answer GETS BRAINLIEST
    15·1 answer
  • What are the odds against selecting a red marble
    14·1 answer
  • The company has only two division division eight and division be last year division a made 60% of the companies total revenue an
    6·1 answer
  • URGENT!!! Picture included
    15·1 answer
  • I will give Brainliest to whoever does all <br><br> PLEASE HELP
    9·1 answer
  • What is the slope of y = -4?
    15·1 answer
  • Look at this graph:
    10·1 answer
  • Find the coordinates of the point 7/10 of the way from A to B<br><br> A=(-4,-7)<br> B=(12,5)p
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!