how does one take a time derivative of sinx
it doesn't seem possible to me, shouldn't the function be in terms of time(t) to take its derivative.How can I calculate the change of the slope $w.r.t$ to anything which doesn't affect the function ???
according to my textbook the time derivative of sinx is$$-cosx *dx/dt$$how did the $dx$ by $dt$ term come ???
all answers are welcomed and please suggest edits, and please if possible give less rigorous answers as I am a high school student with minimal knowledge in calculus :\
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