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But my question is why are those the solutions?

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- Thread starter Ric-Veda
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- #1

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But my question is why are those the solutions?

- #2

Math_QED

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There are more solutions! (sin and cos are periodic functions and repeat itself every ##2\pi##)

But my question is why are those the solutions?

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But I want to know the whole step. Do I get the values by just looking at their domains from their graphs?There are more solutions! (sin and cos are periodic functions and repeat itself every ##2\pi##

- #4

Mark44

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Since you've posted other questions about Laplace transforms and differential equations, it's a reasonable expectation that you have some familiarity with trig functions. If not, you really need to spend some time reviewing them.

As already mentioned, the sine and cosine functions are periodic. Take a look at the graphs of these functions, which should make it obvious that there are many (infinitely many) solutions to sin(x) = 0 and cos(x) = 0.

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Try drawing a triangle and imagine the angle formed when the adjacent or opposite side is 0.But I want to know the whole step. Do I get the values by just looking at their domains from their graphs?

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