Use a calculator to find a value of ? between 0° and 90° that satisfies the statement below. Write your answer in degrees and minutes rounded to the nearest minute.

cos ?= 0.5673

A. ? = 55°026'
B. ? = 54°028'
C. ? = 54°026'
D. ? = 55°028'
E. ? = 53°026'


Answer: A

Mathematics

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A. - 
B.
C.
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Although one simplification step has been taken, identify why each of the following has not been reduced to simplest form: =  ?  = 
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What will be an ideal response?

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