Mathematics B Regents High School Examination - The University Of The State Of New York, 2007 Page 10

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22 The accompanying diagram shows a revolving door with three panels,
each of which is 4 feet long. What is the width, w, of the opening
between x and y, to the nearest tenth of a foot?
4 ft
4 ft
4 ft
x
y
w
1
23 In ΔABC, AC = 18, BC = 10, and cos C = . Find the area of ΔABC
2
to the nearest tenth of a square unit.
[10]
Math. B – Jan. ’07

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