Find 
by using the Chain Rule. Express your final answer in terms of t.w = cos (x2yz); x = t, y = t3, z = t3
A. 8t7 sin (t8)
B. -8t7 sin (t8)
C. -8t7 cos (t8)
D. -7t6 sin (t6)
Answer: B
Mathematics
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Find the equation of the parabola satisfying the given conditions. The vertex is at the origin.Directrix y = 9
A. y2 = -36x
B. x2 = -36y
C. y = - 
x2
D. y2 = -9x
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Tell whether the angle is acute, right, obtuse, or straight.
A. Obtuse B. Acute C. Right D. Straight
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The figure shows an angle ? in standard position with its terminal side intersecting the unit circle. Evaluate the indicated circular function value of ?.Find tan ?.
A. - 
B. - 
C. 
D. - 
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Use <, >, or = to make a true sentence.
A. > B. = C. <
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