Find the curvature of the space curve.r(t) = -9i + (t + 2)j +(ln(cos t) + 9)k
A. ? = csc t
B. ? = sec t
C. ? = sin t
D. ? = cos t
Answer: D
Mathematics
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Simplify the complex fraction using the LCD method.
A. 18
B. 
C. - 
D. 
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Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.sin 
A. - 
B. - 
C. -1
D. 
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Sketch the graph of 
.
?
A. ?
B. ?
C. ?
D. ?
?
E. ?
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Convert to rectangular coordinates.
A. (-2, 2
)
B. (2, -2
)
C. (2, 2
)
D. (-2, -2
)
Mathematics