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
dmitriy555 [2]
2 years ago
11

Sin A - sin B - sin C=-4cos A 2 .sin B 2 .sin C 2​

Mathematics
1 answer:
jarptica [38.1K]2 years ago
7 0

sinA+sinB+sinC

=2sin(A+B)/2cos(A-B)/2+sin C

=2sin(pi-C)/2cos(A-B)/2+2sin C/2cosC/2

=2cosC/2(cos(A-B)/2+cos(A+B)/2)

=4 cos A/2 cos B/2 cos C/2

= RHS

You might be interested in
John, Paul, and George gather aluminum and tin cans to exchanges for money at the local recycling plant. One day, the three men
forsale [732]
To find the percent of the total that George collected, you need to create a ratio with the number of pounds George collected compared to the number of total pounds that were collected.

You will then divide these to find the part (decimal) that George collected. You can convert the decimal to a percent.

3 1/4+6 1/3+11 1/6 = 20 3/4 total pounds of cans.

11 1/6 George
20 3/4 total

11 1/6÷20 3/4 = 0.538
0.538 is approximately 54%.

George collected proximately 54% of the total amount of cans.
6 0
3 years ago
How many 2 1/2 inch-long steel stakes can Curtis cut from a piece of steel that is 25 inches long?​
aleksley [76]
10 or u could do 25 divided by 2.5 is 10
7 0
3 years ago
Newtons second law states that force equals mass times
I am Lyosha [343]

Answer:

acceleration

Explanation:

Newtons second law: "Force is equal to the change in momentum per change in time. For a constant mass, force equals mass times <u>acceleration</u>."

3 0
3 years ago
Three less than the product of 18
ololo11 [35]

Answer:

(18x)-3

Step-by-step explanation:

8 0
3 years ago
What is the answer to 2/3^5 divided by 2/3^1
lorasvet [3.4K]

Use the rules of indices

When they are dividing we subtract the exponents provided the bases are the same.

Since the bases are the same,

(2/3)^5 ÷ (2/3)¹

Will be

(2/3)^5-1

= (2/3)⁴

= 16/81

Hope this helps.

8 0
4 years ago
Other questions:
  • Every prime number has greater than 10 has a digit in the ones place that is included in which set of numbers below?
    6·1 answer
  • A rectangular pyramid was sliced parallel to its base. What is the shape of the cross section shown in the figure?
    13·2 answers
  • Aviv cut out the ads on 5 pages of a newspaper. He discovered that when he put the ads together, they filled 1/3 pages. How many
    10·1 answer
  • Please answer w/ explanation !!
    5·1 answer
  • Subtracting decimals<br><br> -9 - 5 =
    14·2 answers
  • What is 3x^2 + 4x - 8 = 0
    6·2 answers
  • Which expression is equivalent to
    15·1 answer
  • 1+1-1=1+1+1+1=1+3,650,000
    8·1 answer
  • Plz I need help can you solve this
    11·1 answer
  • PLS HELP MEEE PICTURE BELOW
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!