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Fantom [35]
3 years ago
12

Select the correct answer.

Mathematics
1 answer:
bulgar [2K]3 years ago
8 0

Answer:

Option A. is the correct option.

Step-by-step explanation:

We have to get the simplified form of sin (.6x)-sin(.4x)

As we know the identity sinA- sinB = 2 cos(A+B)/2.sin(A-B)/2

We apply the identity in the given expression

sin(.6x)-sin(.4x) = 2 cos(.6x + .4x)/2.sin(.6x - .4x)/2

                        = 2 cos(x/2).sin(0.2x/2) = 2 cos(0.5x).sin(0.1x)

Therefore option A is the correct option.

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Answer:

<u>Length of 1 piece= Length of total divided by 8</u>

Step-by-step explanation:

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They are asking for formula to find the length of each piece

<u>Length of 1 piece= Length of total divided by 8</u>

<u></u>

Hope that helps!

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