AIR MATH

Math Question

Find an equation for the line tangent to the curve at the point defined by the given value of \( t \). Also, find the value of \( \frac{d^{2} y}{d x^{2}} \) at this point.
\[
x=6 \cos t, y=6 \sin t, t=-\frac{\pi}{4}
\]
The equation \( \square \) represents the line tangent to the curve at \( t=-\frac{\pi}{4} \).
(Type an exact answer, using radicals as needed.)

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