Solve the problem.Given the approximation cos 23° ? 0.92, use trigonometric identities to find the approximate value of csc  If necessary, round the answer to two decimal places.

A. 1.09
B. 0.39
C. 0.42
D. 2.56


Answer: D

Mathematics

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Is the function graphed below one-to-one?

A. Yes B. No

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Solve the system by the elimination method.3x + 2y = -5-9x - 6y = -15

A. {(-15, -10)} B. {(15, 10)} C. {(x, y)|3x + 2y = -5} D. ?

Mathematics

Perform the operations indicated.(-7)(-3)(-1)(10)

A. 210 B. -210 C. 31 D. 6

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Solve.4x2 + y2 = 92x2 - y2 = 21

A. (-, -i), (-, i), (, -i), (, i)
B. (-, -), (-), (, -), ()
C. (, -i), (, i)
D. (-, i), (, i)

Mathematics