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
Vesnalui [34]
2 years ago
15

Express M=cos3A + cos A and N = sin3A + sin A as a product form​

Mathematics
1 answer:
elena-14-01-66 [18.8K]2 years ago
3 0

Answer:

2cosAcos2A, 4sinAcos^2A

Step-by-step explanation:

cos3A+cosA

2cos((3A+A)/2)cos((3A-A)/2)

2cos(4A/2)cos(2A/2)

2cosAcos2A

sin3A+sinA

2sin((3A+A)/2)cos((3A-A)/2)

2sin(4A/2)cos(2A/2)

2sin2AcosA

4sinAcos^2A

You might be interested in
A carousel turns counterclockwise in one degree sections, a total of 280 times , The carousel has turned a total of degrees?
evablogger [386]

Answer:

100800°

Step-by-step explanation:

One degree section is 360°

Turning 280 times will give 280 x 360 = 100800°

5 0
3 years ago
-1/4 divided by 7/4 and show the work!
Goryan [66]

Answer:

-1/7

Step-by-step explanation:

(-1/4)/(7/4) \\\\= (-1/4) * (4/7)\\                 \\=-4/28\\=-1/7

7 0
3 years ago
Read 2 more answers
98% of 50 is what number
Andrew [12]
<h3>To get the solution, we are looking for, we need to point out what we know.</h3>

1. We assume, that the number 50 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 50 is 100%, so we can write it down as 50=100%.

4. We know, that x is 98% of the output value, so we can write it down as x=98%.

5. Now we have two simple equations:

1) 50=100%

2) x=98%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

50/x=100%/98%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 98% of 50

50/x=100/98

(50/x)*x=(100/98)*x       - we multiply both sides of the equation by x

50=1.02040816327*x      - we divide both sides of the equation by (1.02040816327) to get x

50/1.02040816327=x

49=x

x=49

now we have:

<h3>98% of 50 = 49</h3>
5 0
2 years ago
Read 2 more answers
Ms Whittier wrote the following on the board:
VashaNatasha [74]
Sherry didn't write the correct expression, the correct expression should have been 6×(4+5) or 6×(5+4). Sherry found the product of 6,5, and 4, instead of the product of 6 and the sum of 5 and 4. In addition, the two expressions above are both correct because both do represent the product of 6 and the sum of 5 and 4. Furthermore, 5+4 and 4+5 are the same.
6 0
2 years ago
Plz help plz plz plz​
maw [93]

Answer:

Step-by-step explanation:

depth = 3

width = 4

hight = 4

4×3×4 = 48

7 0
2 years ago
Other questions:
  • Please help me. 10 pts
    6·2 answers
  • With a scale factor 1 : 25000 , what would be the real distance on a 6.8cm map?
    13·1 answer
  • Tyler and Eric coach the Fairlawn Middle School soccer team. They are hosting the soccer team's pasta dinner tonight for the pla
    5·1 answer
  • Cobalt-60 is used in the treatment of cancer. A sample contains 8 grams of Co-60 where k = 0.1308
    12·2 answers
  • Its pitcher is shaped like a cylinder with a radius of 1 centimeter and a height of 7.8 cm. What's this pitcher plant's approxim
    10·1 answer
  • For a birthday party, a skating rink charges a $20 fee and $5 per person. The equation y=5x + 20 represents the total amount cha
    5·1 answer
  • Ms Greene class has two chameleons. Lumpy total length is 12 inches and Larry is 6 inches. Each of their fails is twice as long
    6·1 answer
  • How would you do this?
    13·2 answers
  • Given the graph of a linear function, identify the steps
    8·2 answers
  • What is 18/42 in simpist form?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!