Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cos ? = - 
, ? in quadrant II Find sin 2?.
A. - 
B. - 
C. 
D. 
Answer: A
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Solve the problem.A borrower uses an income tax refund to pay off the balance on a fixed installment loan. Which rules or methods can be used to compute the amount of interest he will save?
What will be an ideal response?
Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.logn
A. 
logn6 + 
lognx - 
lognz
B. 
logn6 + 5 lognx - 9 lognz
C. 
logn6 + 
lognx + 
lognz
D. 
logn6 - 
lognx - 
lognz
Use a calculator to find the approximate value. Express your answer in degrees rounded to two decimal places.cos-1 (0.45)
A. 53.49° B. 24.23° C. 26.74° D. 63.26°
Solve the problem. Round your answer to the nearest tenth.Find the work done by a force of 200 pounds acting in the direction 
in moving an object 75 feet from (0, 0) to (-75, 0).
A. 6708.2 ft-lb B. 8944.9 ft-lb C. 15,000.0 ft-lb D. 13,416.1 ft-lb