Find 
.y = (cos x)
A. (cos x)
ln (
)
B. -(cos x)
-1 sin x
C. 
(cos x)
-1
D. -
(cos x)
-1 sin x
Answer: D
Mathematics
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the 
and the vertical line 
about the x-axis.
A. 2?(e2 - 1) B. ?(e2 - 1) C. ?(e - 1) D. ? e
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Perform the operation in expanded notation. Write your answer in simplified form.172 + 145
A. 327 B. 317 C. 1693 D. 337
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Find the measure of the dihedral angle indicated.The figure shown is a right prism whose bases are regular nonagons. Find the measure of the dihedral angle between each lateral face and a base.
A. 40° B. 140° C. 144° D. 90°
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Solve the equation.
a = 0
A. {19} B. {-19} C. {1} D. {0}
Mathematics