Multiply and simplify.(1 - cot ?)2

A. 1 + 2 sin2 ?
B. cos2 ? - cot ?
C. sin ? + csc ?
D. csc2 ? - 2 cot ?


Answer: D

Mathematics

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Find the absolute extreme values of the function on the interval.f(x) = csc x, -  ? x ? 

A. absolute maximum is 0 at x = -?; absolute minimum is -1 at x = ? B. absolute maximum does not exist; absolute minimum does not exist C. absolute maximum is -1 at x = ?; absolute minimum is 1 at x = 0 D. absolute maximum is 1 at x = ?; absolute minimum is -1 at x = ?

Mathematics

Find the equation of the ellipse satisfying the given conditions.Find an equation of an ellipse with vertices at (5, -4) and (5, 8) and having the endpoints of minor axis at (2, 2) and (8, 2).

A.  +  = 1
B.  +  = 1
C.  -  = 1
D.  +  = 1

Mathematics

Perform the indicated computations. Write the answer in scientific notation.

A. 18 x 102 B. 9 x 10-6 C. 18 x 10-6 D. 9 x 102

Mathematics

Solve the problem.The sum of three numbers is -11. The first, minus the second, plus 5 times the third, is -9. The third, plus 5 times the first, plus the second, is -27. What are the numbers?

A. (-4, -5, -2) B. (4, 5, 2) C. (-4, -4, -5) D. No solution

Mathematics