For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (9 sin 
t + 7)i + (9 cos 13t) - 6)j + 5tk; osculating plane at t = 0.5?.
A. 
(y + 6) + 9
= 0
B. 
(x - 7) + 9
= 0
C. 
(y + 6) + 9
= 0
D. 
(y - 6) + 
= 0
Answer: A
Mathematics
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