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
gayaneshka [121]
3 years ago
10

HELP!! TRIG LAW OF COSINES

Mathematics
1 answer:
vivado [14]3 years ago
4 0

Answer:

C ≈ 95.7°

Step-by-step explanation:

Law of cosines:

c² = a² + b² − 2ab cos C

where a, b, and c are the sides of the triangle, and C is the angle opposite of side c.

9² = 5² + 7² − 2(5)(7) cos C

81 = 25 + 49 − 70 cos C

81 = 25 + 49 − 70 cos C

7 = -70 cos C

-1/10 = cos C

C ≈ 95.7°

You might be interested in
Discuss why Operations Research (Decision Sciences, Quantitative Analysis, etc.) is an important area of study for future manage
harina [27]

Answer and Explanation :

Operations Research can be portrayed as a logical way to deal with taking care of issues; it speaks to the basic components of the issue into a model, which is then taken a shot at to yield an ideal solution for implementations.

It utilizes measurable examination and scientific demonstrating to tackle a wide scope of business issues, just as improve basic leadership. All of which make it a significant region of concentrate for future directors.

5 0
3 years ago
the fair committed wants to decorate each ride with 40 balloons there are 13 rides if balloonso come 24 package how many package
Jet001 [13]
14x30=520. So, 520 divided by 24 = 21.6 . So, that means that you will need 22 packages of balloons and you will have 8 left over
3 0
3 years ago
Read 2 more answers
Please help me answer the question in the picture
Citrus2011 [14]
Answer:

A) -2/3

Explanation:
6 0
3 years ago
Read 2 more answers
Please help me; )!!!!!!!!!!!!!
Vaselesa [24]
To show how you decided, the simple way would be to draw a picture. Create 2 rectangles of the same length and divide them up according to the fraction. Then shade the number of pieces for the numerator and compare both fractions. Whichever is longer is the greater fraction.
5 0
3 years ago
Six less than a twice a number is that of that number plus 20
Natasha_Volkova [10]

Answer:

The number N = 26

Step-by-step explanation:

The statement is :

Six less than twice a number is that of that number plus 20

The statement now written in digits as

Let the number be N

So, 2 N - 6 = N + 20

Or, 2 N - N = 20 + 6

Or, N = 26  

Hence the number N is 26  Answer

4 0
3 years ago
Other questions:
  • The bottom of Ignacio's desktop is 74.5cm from the floor. Ignacio's sits in his adjustable chair, and the tops of his legs are 4
    14·1 answer
  • A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount. If a jacket cos
    10·1 answer
  • How to solve -14x-11y=97 and -12y+11x=27 for x and y
    12·1 answer
  • In the figure shown below, what fractional part of the circle is shaded?
    8·1 answer
  • What is the solution set for x2+25=0
    9·1 answer
  • Solve the system of equations using elimination/combinations.
    12·1 answer
  • Will Mark Brainlest help pleaseeeeee​
    15·2 answers
  • At a middle school, 95 students have freckles. There are 382 students in the school. To the nearest tenth of a percent, what per
    12·1 answer
  • Can someone please help me with this ​
    5·2 answers
  • Use elimination and explain
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!