Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = 
, tan ? < 0Find sin(2?).
A. - 
B. 
C. 
D. 
Answer: B
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A connecting rod 28 cm long joins a crank 18 cm long to form a triangle with a third, imaginary line. If the crank and the imaginary line form an angle of 145°, find the angle formed by the connecting rod and the imaginary line. 
A. 2.5° B. 17.5° C. 13.4° D. 21.6°
Simplify.i4
A. 1 B. i C. -i D. -1
Find the mean. If necessary, round to one decimal place.3, 3, 20, 4, 8, 12, 13, 1
A. 9.1 B. 4 C. 8 D. 7
Solve the problem using matrices.John has a jarful of quarters and nickels. There are 103 coins in the jar. The value of the coins is $14.35. How many of each type of coin?
A. 57 quarters and 46 nickels B. 98 quarters and 5 nickels C. 46 quarters and 57 nickels D. 51 quarters and 52 nickels