Find the indicated trig function of ?, if ? is an angle in standard position with the terminal side defined by the given point.(21, 28); Find cos ?.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve.Karl Mason sold 
gross of data disks on Monday, 
gross on Tuesday, and 
on Wednesday. What was the total gross sold?
A. 
gross
B. 
gross
C. 
gross
D. 
gross
Mathematics
The median for this set of numbers: 1.5cc, 4.0cc, 6.5cc, 8.0cc, 12.0cc, 12.0cc; is
A. 7.25cc B. 12.0cc C. 7.33cc D. none
Mathematics
Find the exact value of the expression. Do not use a calculator.tan 15° - 
A. -1 B. 0 C. 1 D. 2
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. - 
D. - 
Mathematics