Find the infinite sum accurate to 3 decimal places.
A. 0.859
B. -0.859
C. -0.320
D. 0.460
Answer: D
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (7 sin 2t)i - (2 cos 2t)j + (7 csc 2t)k
A. a
= -28i - 28k
B. a
= 28i + 28k
C. a
= 8j + 28k
D. a
= -28i + 28k
Mathematics
Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Mathematics
Graph using the slope and the y-intercept.y = -3x - 6
A. 
B. 
C. 
D. 
Mathematics
Add or subtract as indicated.(10x + 1) - (5x - 4)
A. 5x - 3 B. 5x + 5 C. 15x - 3 D. 15x + 5
Mathematics