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
erastovalidia [21]
3 years ago
15

Select the angle that correctly completes the law of cosines for this triangle. 72 + 252 – 2(7)(25)cos ___ = 242 A. 180° B. 90°

C. 16° D. 74°
Mathematics
1 answer:
meriva3 years ago
7 0

Answer:

x =76.45 degrees

Step-by-step explanation:

72 + 252 – 2(7)(25)cos _x__=242

combine like terms

324-350cosx = 242

subtract 324 from each side

-350x = -82

divide by -350

cos x = -82/-350

cos x = 82/350

take the arccos of each side

arccos (cos x) = arccos (82/350)

x =76.45 degrees


You might be interested in
Due today, Help fast, I will mark brainliest<br><br><br>I need help with everything!! :(<br><br>​
GuDViN [60]

Answer:

Anupama wants to purchase a curtain of window for her study room, she measures its length as 14 m, breadth as 3m, how much cloth will she purchase?Geometry is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space that are related with distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is called a geometer. Wikipedia

4 0
1 year ago
Write a numerical expression with exponents to describe the sum of 3x3x3x3 and 36
Scorpion4ik [409]

4
3 +36 which is equal to 117
4 0
3 years ago
Read 2 more answers
Evaluate expression- Which of these answer choices are correct answer to the question
romanna [79]

Answer:

i=10^5

eq is 2^n*i

hence 2^3*10^5

8*100000

=800.000 bacteria

pls mark as brainliest

4 0
3 years ago
How many degrees is 25/360 of a full turn
ludmilkaskok [199]
If a full turn is 360 degrees then it is 25 degrees
8 0
2 years ago
Read 2 more answers
Which statement about sound is true because it is a mechanical wave?
maw [93]

Answer:

It must travel through a medium

Step-by-step explanation: Because I said so >:(

4 0
2 years ago
Read 2 more answers
Other questions:
  • How do you find the intersection points given 2 or more equations in a ti-84 calculator?
    7·1 answer
  • A rectangular yard measuring 26ft by 40ft is bordered (and surrounded) by a fence. Inside, a walk that is 2ft wide goes all the
    13·1 answer
  • 2/3 + 5/6 in the simplest form
    12·1 answer
  • NEED ANSWER FAST!!!!!<br> F(x) = x 2 + 2 <br> F(x2) =
    6·1 answer
  • Tania believes that if she increases the price of an item (mark up) by 10% and then decrease it (mark down) by 10%,she will have
    7·1 answer
  • Leslie has 8 pencils.
    12·2 answers
  • What's the sum of two integers with different signs is 8
    5·1 answer
  • Consider the enlargement of the pentagon
    14·1 answer
  • PLS HELPP I NEED TO KNOW
    11·1 answer
  • Taj had 15 books. He gave some of the books to his friends.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!