Find the exact value of the expression.csc 
A. 
B. 
- 
C. 
- 
D. 
+ 
Answer: B
Mathematics
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Find the length of the indicated portion of the trajectory.r(t) = (2cos t)i + (2sin t)j + 3tk, 0 ? t ? ?/2
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Rewrite the fraction with the denominator indicated.Write 
with a denominator of 88.
A. 
B. 
C. 
D. 
Mathematics
Solve the quadratic inequality by sketching the graph of the corresponding quadratic function.x2 + 5x + 9 < 0
A. Solution: ?
B. Solution: [0, ?)
C. Solution: (-?, ?)
D. Solution: (-?, 0)
Mathematics
Let v and w be two vectors in the plane with given magnitudes. The angle between v and w is ?. Find the expression. Round the answer to the nearest tenth.
= 7, 
= 15, ? = 30°
Find 
A. -159.9 B. 21.4 C. 9.6 D. 16.6
Mathematics