Plotting of a simple sine function in a frequency domain

Hello, I need help with plotting of a simple sine or cosine function in a frequency domain. I have tried to look on the net how to do this but without a success. It should be in continuous time. I just want to see the 2 delta functions and I will continue from there. Thanks.

[Image Analyst]

I first thought you want a sine wave in the frequency domain, but you don't - your sine wave is in the time or spatial domain. More precise/less ambiguous wording would be "I would like to plot the spectrum, in the frequency domain, of a time domain signal that is a sine or cosine wave in the time domain."

Answer 1

[Star Strider]

See the R2015a documentation for fft. Everything you need is there.

See specifically the code just above and below the first plot figure.

Answer 2

[FAHAD AHMED]

Plot a sine wave in time domain and transforms this sine wave into frequency domain.