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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

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Select the correct answer from the drop-down menu.
valina [46]

The diagram is missing and so i have attached it.

Answer:

Next step is;

to keep the same compass width and draw an arc centered at H crossing the previous arc in the image.

Step-by-step explanation:

A perpendicular line is to be drawn to line GH through point A.

The steps are;

1. Identification of the two end points of the line which has been done.

2. Place one leg of the compass at point G and draw a small arc above the line GH. This has been done.

3. Without changing the span of the compass, place the same leg of the compass at point H and draw another small arc above the line GH to intersect the previously drawn small arc.

4. Make use of a straight object to connect the point of intersection of the two small arcs to the point A.

This line is the perpendicular line to GH.

In the figure attached, they have just finished point 2 I wrote above. Thus, the next step is point 3.

4 0
3 years ago
Help me Solve for x<br> -9x=5
lbvjy [14]

Answer:

x= -5/9

Step-by-step explanation:

Divide -9 from 5.

4 0
3 years ago
Subtract<br> 273,054<br> - 184,095
NeTakaya

Answer:

88,959

Step-by-step explanation:

it's subtraction. I got the answer

7 0
3 years ago
Read 2 more answers
How do you find the square root of a number?
MA_775_DIABLO [31]
Multiply it by its self 3 times for example 2 to the square root of 3 2x2x2
3 0
3 years ago
Which number line best shows how to solve −8 − (−2)? A number line from negative 10 to 10 is shown, with numbers labeled at inte
LekaFEV [45]

Answer:

A number line from negative 10 to 10 is shown, with numbers labeled at intervals of 2. An arrow is shown from point 0 to negative 8. Another arrow points from negative 8 to negative 6

Step-by-step explanation:

A number line is a straight line with numbers placed at equal intervals. Positive numbers are placed to the right of 0 and negative numbers are placed to the left of zero.

When a number (x) is added x unit is moved to the right while if a number (x) is subtracted x units is moved to the left.

To solve -8 - (-2) = -8 + 2

Given a A number line from negative 10 to 10 with numbers labeled at intervals of 2. An arrow is shown from point 0 to negative 8 then since 2 is added, we move 2 units right from negative 8 to negative 6.

7 0
3 years ago
Read 2 more answers
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