Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - 
, 
< ? < ?Find cos(2?).
A. - 
B. 
C. 
D. - 
Answer: D
Mathematics
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Use your calculator to perform the indicated operations. Give as many digits in your answer as shown on your calculator display.1.73
A. 4.913 B. 1.19348319 C. 5.1 D. 0.56666667
Mathematics
Express the number in scientific notation.2500
A. 2.5 × 10-2 B. 2.5 × 10-3 C. 2.5 × 103 D. 2.5 × 102
Mathematics
Solve the problem.Richard's team wants to plant 285 trees in 3 months. How many trees per month do they need to plant?
A. 105 trees B. 190 trees C. 98 trees D. 95 trees
Mathematics
Evaluate the square roots first, then combine the results. Use a calculator or a square root table when needed. Round to the nearest thousandth.
- 
A. 174.000 B. 10.304 C. 4.304 D. 12.961
Mathematics