Question

1. 100 sin € (100t - 5x) - 100 sin € (100t + 5x)

2. 100 [sin € (100t - 5x) - sin € (100t+ 5x)]

3. = 100 [2 cos € (100t) sin € (5x)]

4 . = 200 cos (100nt) sin (576x)

How they turn 2nd line into 3rd line ? Can anyone explain

Answer 1

Answer:

sorry I don't know

because i haven't learnt this chapter

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Answer 2

Answer:

then download photomath it will solve you are all of problems

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