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Homework Statement
Make a spreadsheet with a dimensionless column marked "t" that goes from 0 to 20 in units of 0.05. Now make columns marked "c" and "s". Integrate the functions c(t) and s(t) with the properties that:
1) c(0)=1
2) s(0)=0
3) Change in c= -s*(change in t)
4) Change in s= c*(change in t)
Make a graph of c vs t and s vs t. Remind you of anything?
The Attempt at a Solution
I know it's supposed to look like cos and sin curves, but what is the formula I'm supposed to input into the cells? I tried to integrate the equations and for 3) I got c= -s*(t2-t1)
and for 4) I got s=c*(t2-t1)
But my values get more and more negative and the graphs don't look like the cos and sin curves.
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