Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Change the given polar coordinates (r, ?) to rectangular coordinates (x, y).
A. (0, -8) B. (8, 0) C. (0, 8) D. (-8, 0)
Mathematics
Solve the problem.The number of acres in a landfill decreases according to the function B = 4300e-0.05t, where t is measured in years. How many acres will the landfill have after 3 years?
A. 3044 acres B. 3543 acres C. 8158 acres D. 3701 acres
Mathematics
Provide an appropriate response.A blueprint calls for a piece of bar stock 
in. long. If a tolerance of ±
in. is allowed, what is the longest permissible measurement for the bar stock?
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to give the real number value. Round the answer to 7 decimal places.y = sin-1(-0.4848)
A. -0.5412698 B. 2.6365103 C. -0.5061345 D. -0.4888889
Mathematics