Find the value of the indicated trigonometric function of the angle ? in the figure. Give an exact answer with a rational denominator.
Find tan ?.
A. tan ? = 
B. tan ? = 
C. tan ? = 
D. tan ? = 
Answer: D
Mathematics
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Solve the equation.
= 
A. {-12} B. {-4} C. {4} D. {3}
Mathematics
Solve.Anne and Nancy use a metal alloy that is 16% copper to make jewelry. How many ounces of an alloy that is 10% copper must be mixed with an alloy that is 20% copper to form 55 ounces of the desired alloy?
A. 24 ounces B. 22 ounces C. 33 ounces D. 38 ounces
Mathematics
Provide an appropriate response.Find the arc length of the indicated sector of the given circle. 
A. 27.58 cm B. 8.78 cm C. 137.88 cm2 D. 220.83 cm
Mathematics
Find the average rate of change of on the interval [1,5].
a. 1 b. 3 c. 8 d. 12
Mathematics