Complete the identity.sin 
= ?
A. -cos x
B. sin x
C. cos x
D. -sin x
Answer: A
Mathematics
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Use a linear approximation to estimate the quantity to four decimal places.
A. 3.2593 B. 3.3593 C. 3.1593 D. 3.4593
Mathematics
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.6
÷ 
A. - 3
B. 3
C. 2
D. - 2
Mathematics
Replace the question mark with the appropriate symbol < or >.20 ? 0
A. > B. <
Mathematics
Use a calculator to find the value of the expression rounded to two decimal places.cos-1 
A. -0.56 B. -31.95 C. 121.95 D. 2.13
Mathematics