advmath-lv1-finalexam2004

21 the graph below shows height as a function of time

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Unformatted text preview: wheel. Choose the correct equation for the graph. 60 50 40 30 20 10 10 20 A. 2π y = 30 + 25cos x 20 B. 2π y = 30 + 25sin x 20 C. 2π y = 55 + 30cos ( x − 4) 20 D. y = 55 + 30sin 2π x 20 22. Prove the identity cos x + sin x tan x = sec x . 23. What is the simplified form of sin( x − 2 π ) ? A. -sin x B. cos x C. -cos x D. sin x 24. Given 5 = 3 cos( πx ) + 2.8 , find all solutions in radians.. Page 9 25. Island A is 160 miles from Island B. A ship sails 310 miles from Island A and then finds that he is off course and 210 miles from Island B. What angle, in degrees, must he turn through to head straight for island B? A B 26. Given a triangle with a =4, A = 17º and B = 28º, what is c? A. 9.7 B. 6.4 C. 0.6 D. 2.5 27. The SAT exam is designed to produce a mean score of 500 and a standard deviation of 100 points. Approximately what percentage of students score above 600? 28. A bag contains 5 red marbles and 10 blue ones. If three marbles are drawn without replacement what is the chance that one is red and two are blue?...
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