Use the reference angle to find the exact value of the expression. Do not use a calculator.sin 855°
A. 
B. - 
C. 
D. - 
Answer: C
Mathematics
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Solve the problem.Jeremy has traveled 
of his total trip. If the trip is a total of 749 miles, how many miles has he gone?
A. 321 miles
B. 642 miles
C. 107 miles
D. 91
miles
Mathematics
Use the right triangle shown below and find the missing length. Give an exact answer and a decimal approximation rounded to two decimal places. 
a = 32, b = 60
A. c = 68, -68 B. c = 1156 C. c = 68 D. c = 4624
Mathematics
Find the domain of f and write it in interval notation.f(x) = log9(2x - 4)
A. (0, ?)
B. (-?, ?)
C. 
D. 
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 
Mathematics