Complete the identity.2 tan x - (1 + tan x)2 = ?
A. 1 - sin x
B. 1
C. 0
D. - sec2 x
Answer: D
Mathematics
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.y = 8x3, y = 8x, for x ? 0
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.-9x0
A. 1 B. -1 C. 0 D. -9
Mathematics
Write the first n terms of the given arithmetic sequence (the value of n is indicated in the question).a3 = -16, d = 5, n = 5
A. -16, -11, -6, -1, 4 B. -16, -21, -26, -31, -36 C. -26, -21, -16, -11, -6 D. -6, -11, -16, -21, -26
Mathematics
Solve the equation on the interval 0 ? ? < 2?. sin ? + 
cos ? = -1
A. 
B. 
C. 
D. 
Mathematics