Find the slope of the tangent line to the parametric curve
{
x
=
3
cos
(
t
)
y
=
4
sin
(
t
)
\displaystyle {\left\lbrace\begin{array}{c} {x}={3}{\cos{{\left({t}\right)}}}\\{y}={4}{\sin{{\left({t}\right)}}}\end{array}\right.}
{
x
=
3
cos
(
t
)
y
=
4
sin
(
t
)
at the point
π
4
\displaystyle \frac{\pi}{{4}}
4
π
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\displaystyle
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
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