Use a half-angle formula to find the exact value of the expression.cos 

A. - 
B. - 
C.
D.


Answer: C

Mathematics

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Evaluate the expression using the order of operations.(8 + 4)2

A. 68 B. 144 C. 80 D. 24

Mathematics

Decide whether or not the equation defines y as a function of x.x = y2 - 9

A. Yes B. No

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Determine the sample space for the experiment. ? Two prize winners are selected from six people: A, B, C, D, E, and F. ?

A. S = {AB, AC, AD, AE, BC, BD, BE, CD, CE, DE} B. S = {AB, AC, AD, AE, AF} C. S = {AB, AC, AD, AE, AF, BC, BD, BE, BF, CD, CE, CF, DE, DF, EF} D. S = {AB, AC, AD, BC, BD, CD} E. S = {AB, CD, EF}

Mathematics

Use the sign diagram for  to determine x-values at which relative maxima occur, where  and 

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A.
B. ?
C.  and 
D.
E. no relative maxima

Mathematics