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
Leona [35]
3 years ago
13

In ∆ABC if AB = 6 cm , BC = 8cm, AC = 10 cm then value of ∠B is ________​

Mathematics
1 answer:
Fudgin [204]3 years ago
5 0

Answer:

90 degrees

Step-by-step explanation:

B is the corner and angle opposite of the side AC.

so, AC is becoming side c, and the other two are a and b (it does not matter which is which).

we use the enhanced Pythagoras formula for general triangles

c² = a² + b² - 2ab×cos(C)

in our example the angle C is named B.

but other than that we simply calculate

10² = 6² + 8² - 2×6×8×cos(B)

100 = 36 + 64 - 96×cos(B)

100 = 100 - 96×cos(B)

0 = -96×cos(B)

cos(B) = 0

=>

B = 90 degrees

You might be interested in
I need help on all of this cuz I don’t get it
OleMash [197]
I've got three photos for the answers but they don't include 31 or 32.

8 0
3 years ago
How do you find volume of a circle
Sauron [17]

Answer:

V = 4/3 pi r^3  for a sphere

Step-by-step explanation:

You can't a circle is a two dimensional object.

The volume of a sphere, which is the three dimensional form of a circle is found by

V = 4/3 pi r^3

Where r is the radius

5 0
3 years ago
4x-y=10 and y=2x-2 answers
Brums [2.3K]
4x - y = 10, y = 2x - 2

4x - (2x -2) = 10

4x - 2x + 2 = 10

2x = 8

x = 4

4(4) - y = 10

-y = -6

y = 6

So x = 4 y= 6

Hope this helps!
Brainliest and a like is much appreciated!
6 0
3 years ago
Read 2 more answers
Some students are going on a field trip. The cost of the trip is $100, in addition to $7per student. Write an equation that rela
grigory [225]

Answer: C= 100+7n

Step-by-step explanation:

5 0
2 years ago
Ten million more than 280,509,031
Maru [420]
That means you are multipliying 10,000,000 by 280,509,031...
7 0
4 years ago
Read 2 more answers
Other questions:
  • Simplify csc(-x) /1+tan^2(x)
    8·1 answer
  • Sandra has a cylindrical mold for making candles with a radius of 3.4 cm and a height of 6 cm. If Sandra uses a rectangular bloc
    15·1 answer
  • The narrower the confidence interval, the more informative it is. What are the two main ways in which this can be achieved?
    14·2 answers
  • Rewrite these in increasing order length <br> 471 m, 464 km, 5 cm
    6·2 answers
  • Imani bought books for college and paid 35% of the total cost. Her parents paid the remaining balance of $438.75. The total cost
    15·1 answer
  • Write three ratios equal to 7/35? A 1/7, 2/14, 3/21 B 5/7, 10/7, 15/7 C 7/35, 7/40, 7/45 D 1/5, 2/10, 3/15 I think it is C or D.
    7·2 answers
  • Solve for x:
    14·1 answer
  • Jupiter,Saturn or Uranus?
    12·1 answer
  • Each graph below represents a function. Drag the correct domain for each function into the box under its graph.
    10·1 answer
  • You are the administrator of an annual essay contest scholarship fund. This year a $84,000 college scholarship is being divided
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!