Use the definition or identities to find the exact value of the indicated trigonometric function of the acute angle ?.sec ? = 
Find cot ?.
A. 
B. 
C. 
D. 
Answer: A
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Decide whether the statement is true or false.A square is a rectangle.
A. True B. False
Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 5tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Divide. 
÷ 
A. 
B. 
C. 
D. z - 9
Solve.A vendor sells hot dogs, bags of potato chips, and soft drinks. A customer buys 3 hot dogs, 4 bags of potato chips, and 5 soft drinks for $12.50. The price of a hot dog is $0.75 more than the price of a bag of potato chips. The cost of a soft drink is $2.00 less than the price of two hot dogs. Find the cost of each item.
A. $1.50 for a hot dog; $1.00 for a bag of potato chips; $0.75 for a soft drink B. $1.75 for a hot dog; $1.00 for a bag of potato chips; $1.00 for a soft drink C. $1.50 for a hot dog; $0.75 for a bag of potato chips; $1.00 for a soft drink D. $0.75 for a hot dog; $1.50 for a bag of potato chips; $1.00 for a soft drink