Use an identity to write the expression as a single trigonometric function or as a single number.sin 22.5° cos 22.5°
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Translate the expression into a word phrase.8.1z
A. 8.1 divided by z B. z more than 8.1 C. 8.1 increased by z D. 8.1 multiplied by z
Mathematics
Add. Write the answer in lowest terms.
A. 12
B. 70
C. 26
D. 4
Mathematics
Evaluate the expression.sec(-180°)
A. -1 B. Undefined C. 1 D. 0
Mathematics
Use the change of base rule to find the logarithm to four decimal places.log7 3
A. 1.7712 B. 0.5646 C. -0.5646 D. 1.1292
Mathematics