Use a graphing calculator to determine which expression completes the identity.The expression 
? csc ?is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be used as the right hand side of the equation to complete the identity?
A. sec ? + cos ?
B. csc ? - tan ?
C. tan2?
D. cos ? - 1
Answer: B
Mathematics
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Perform the operation indicated.
+ 
A. 
B. 
C. 
D. 
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Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to two decimal places.log8.0 4.1
A. 0.68 B. 0.51 C. 0.61 D. 1.47
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Perform the indicated operation. Write the result in the form a + bi.(1.4 - 5.2i) - (0.2 - 0.7i)
A. -3.8 - 0.5i B. 1.6 - 5.9i C. 1.2 - 4.5i D. -3.8 + 0.5i
Mathematics
Add the numbers using the number line.-6 + (-9) 
A. -3 B. 15 C. 3 D. -15
Mathematics