Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 

A.
B. - 
C. - 
D.


Answer: D

Mathematics

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Represent the logical form by a circuit.(~p ? q) ? (r ? ~q)

What will be an ideal response?

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Find the indicated term of the arithmetic sequence.Given an arithmetic sequence with a1 = -3 and a10 = 51, find a14.

A. 85 B. 75 C. 112 D. 54

Mathematics

Expand.4

A. x2 - 4x + 6 - 4x-1 + x-2 B. x2 + 4x + 6 + 4x-1 - x-2 C. x2 + 4x - 6 + 4x-1 - x-2 D. x2 - 4x - 6 - 4x-1 + x-2

Mathematics

Solve the problem.If $900,000 is to be saved over 25 years, how much should be deposited monthly if the investment earns 6% interest compounded monthly?

A. $951.46 B. $819.61 C. $1108.95 D. $1298.71

Mathematics