Actually I have been thinking this question since 1 week inside my head.

As far as I know that those functions are coming from "Euler's Equation" but I still concerned that what such kind of real life things are making cos and sin functions are so important for us?

I just know that those functions are used in FM broadcast, television broadcast, WiFi network etc. areas.

But what are the more things like "Fourier analysis" tho.? I haven't learned it in my faculty but I just want to learn the main importance of cos and sin functions for us...

Thanks... ^^

As far as I know that those functions are coming from "Euler's Equation" but I still concerned that what such kind of real life things are making cos and sin functions are so important for us?

I just know that those functions are used in FM broadcast, television broadcast, WiFi network etc. areas.

But what are the more things like "Fourier analysis" tho.? I haven't learned it in my faculty but I just want to learn the main importance of cos and sin functions for us...

Thanks... ^^

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