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
NARA [144]
3 years ago
13

If A+B+C=180 prove that cos^2a + cos^2B + cos^2C = 1 - 2COSACOSBCOSC

Mathematics
1 answer:
IceJOKER [234]3 years ago
4 0
Please read the attached file

You might be interested in
Write the following fractions in order of size.
11Alexandr11 [23.1K]
Smallest 1/4 5/12 1/2 2/3 3/4 biggest
5 0
3 years ago
Read 2 more answers
ABCD and PLMN are similar rectangles. Find the scale factor for turning rectangle ABCD into rectangle PLMN.
Usimov [2.4K]
Your answer is 3/2 i know for a fact
4 0
3 years ago
What is the answer? thanks!
omeli [17]

Answer:

Step-by-step explanation:M angel 7 = 60 degrees, angle 1 is 60 as well because it is vertical. So your answer is A: 60. I hope my answer helped you. ;).

6 0
3 years ago
Approximately how many time greater is the amount of earth surface that is covered by water compared to the amount of earth of e
Daniel [21]
71% water
29% land

71:29= 2,448=> the amount of earth surface that is covered with water is ~2,5 times bigger than the amount of earth surface that is covered with land
7 0
3 years ago
Which word describes the slope of the line?
MrMuchimi
The answer is undefined
5 0
3 years ago
Read 2 more answers
Other questions:
  • A coin is tossed 3 times, find the probability that the coin will land heads up all 3 times, or tails up all 3 times.
    8·1 answer
  • A tank is 2m long, 1.4m wide and 1.8m high. find the volume of water in the tank when it is half full.
    7·1 answer
  • GIVING BRAINLIST PLS HELP ASAP !!!!!
    11·1 answer
  • HELP <br><br> What is the equation of the trend line in the scatter plot ?
    14·1 answer
  • (9x +1) 45 = (x+5) 14
    14·1 answer
  • Solve this and please try to explain also​
    14·1 answer
  • A. p = 5t + 4<br> b. a = t2 - 4<br> c. d = t(5 – f)<br> Make t the subject in the formulas
    15·1 answer
  • Please please please help me I’ll give brainly
    5·2 answers
  • Find the rule to complete the pyramid.
    8·1 answer
  • Answer question 6 for me thanks
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!