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
Tcecarenko [31]
3 years ago
14

Find the measure of angle B​

Mathematics
1 answer:
Irina18 [472]3 years ago
8 0

Answer:

Step-by-step explanation:

Use the Law of Cosines for this. If we want the measure of angle B, then the equation is set up like this:

b^2=a^2+c^2-2accosB

Filling in:

9^2=14^2+6^2-2(14)(6)cosB and simplifying a bit:

81 = 196 + 36 - 168cosB and a bit more:

81 = 232 - 168cosB and even more:

-151 = -168cosB and divide both sides by -168 to get

.9378881988 = cosB

Now use the 2nd button on your calculator along with the cos button to find the missing angle. Make sure your calculator is in degree mode first. Your angle should be 20.30012152

You might be interested in
Round 919,827 to each place value in the table
Alchen [17]

Nearest 1000: 920,000

Nearest 100: 919,800

Nearest 10: 919,830

8 0
3 years ago
Read 2 more answers
Angle sum theory find Y
kompoz [17]
<h3>Answer:</h3>

25

<h3>Step-by-step explanation:</h3>

The angle sum theory says that the sum of all the interior angles in a triangle is 180 degrees.

Finding X

To solve for y, we must first find x. This way we know 2 of the interior angles. Luckily, angle x is a part of a linear pair.

  • Linear Pairs are 2 adjacent angles that create a straight line together. This means that the sum to 180 degrees.

Angle x and the angle with a measurement of 115 form a linear pair. Thus, we can create an equation to find x.

  • 115 + x = 180

By subtracting 115 from both sides we know that x = 65.

Solving for Y

Now that we know x, we can find y. We know that one of the interior angles is 65 and that the other is 90 degrees. The square marking the bottom angles in the middle show that they are right angles.

  • Right angles are usuaslly denoted with a square drawn in the angle and have a measurement of 90 degrees.

Lastly, we can create a formula to find y with the angle sum theory.

  • 90 + 65 + y = 180

Combine like terms

  • 155 + y = 180

Subtract 155 from both sides

  • y = 25

This means that the angle y is 25 degrees.

4 0
1 year ago
Solve for m and simplify: 30/4=m/6
Zarrin [17]

Answer:

m=45

Step-by-step explanation:

4 0
2 years ago
A football team loses 3 yards, gains 12 yards, gains 10 yards, and then loses 15 yards. Did the team gain yards or lose yards ov
e-lub [12.9K]

Answer: the answer is 4

Step-by-step explanation:

5 0
2 years ago
Which is the measure of the third angle in the similar triangles below?
Diano4ka-milaya [45]

Answer:

65

Sorry if im wrong

7 0
3 years ago
Other questions:
  • What is the inverse of the function f(x) = x +3?
    10·1 answer
  • A car traveled at 55 miles per hour for 2.5 hours and then at 65 miles per hour for 3 hours. How far did the car go?
    11·2 answers
  • It is question number 32 is am looking for please help thanks
    9·2 answers
  • 50 points!!! ANSWER ASAP WHAT GOES IN THE BOX?
    14·2 answers
  • Find the extraneous solution of the equation |9 – 4x|= -5x .
    7·1 answer
  • Fred the ant is on the real number line, and Fred is trying to get to the point O
    15·1 answer
  • Find the length of AB
    8·1 answer
  • What is the hcf of 108 and 24
    9·2 answers
  • Perform the indicated operation.‼️‼️
    7·2 answers
  • In the figure below, mZ1 = 105º. Find the measures of remaining angles.<br> I really need hell
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!