For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (9 sin 
t + 10)i + (9 cos 13t) - 10)j + 5tk; osculating plane at t = 2.5?.
A. 
(y - 10) + 
= 0
B. 
(y + 10) + 9
= 0
C. 
(y + 10) + 9
= 0
D. 
(x - 10) + 9
= 0
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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?AGD
A. 85° B. 100° C. 95° D. 90°
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A. loga 88
B. loga 22 ? loga 4
C. loga 
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