Question 333091
In quadrant 1,  both x and y are positive
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x=cos(t)= adjacent side to "t" of triangle
y=sin(t) = opposite side to "t" of triangle
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so if  {{{cot(t)= x = cos(t)/sin(t) = x/y}}}
tnen {{{cos(t)=x}}} and {{{sin(t)=y=1}}}