Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = 
, 
< ? < ? and cos ? = 
, 0 < ? < 
, find the exact value of cos (? - ?).
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the unknown value.3.1 is what percent of 4?
A. 78.5% B. 82.5% C. 77.5% D. 75.5%
Mathematics
Solve the problem.The distance from the downtown station to the last stop on a commuter railroad line is 17 miles. The distance between stops is about 3.4 miles. How many stops are there?
A. 2 stops B. 4 stops C. 5 stops D. 6 stops
Mathematics
Use addition, subtraction, or multiplication to solve the problem.Inna bought 5 rose plants at $11 each, 2 begonias at $3 each, and 
at $7 each. Find the total cost of the plants.
A. $34 B. $1040 C. $103 D. $273
Mathematics
Factor completely.
A. 
B. 
C. 
D. prime
E. none of these
Mathematics