Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = , 0 < ? < Find cos(2?).

A. - 
B. - 
C.
D.


Answer: B

Mathematics

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Find the surface area of a sphere with radius 13.5 cm. Leave the answer in terms of p .

What will be an ideal response?

Mathematics

Find the average value over the given interval.y = 6 - x2; [-3, 1]

A. - 
B.
C. - 
D.

Mathematics

Solve, rewrite in interval notation, and graph.6x - 4 < 2x or -4x ? -12

A. (-?, 1) ? [3, ?)

B. No solution

C. (1, 3)

D. [1, 3]

Mathematics

Simplify.32 + 72

A. 100 B. 58 C. 40 D. 20

Mathematics