I'm a bit rusty..(adsbygoogle = window.adsbygoogle || []).push({});

I have a cosine

y = cos(2*pi*f*t)

If I want to advance the cosine by say 90 degrees

y = cos(2*pi*f*t + pi/2)

but..

this waveform has f cycles per 2*pi*t..so won't I be advancing the phase by f*pi/2?

someone pls straigthen me out - I'm working with Matlab indexes and I'm getting confused!

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# Basic trig phase question *sorry*

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