Find all specified roots.Seventh roots of 1.

A. 1, cis , cis , cis , cis , cis , cis 
B. -1, cis , cis , cis , cis , cis , cis 
C. 1, cis , cis , cis , cis , cis , cis 
D. 1, cis , cis , cis , cis , cis , cis , -1


Answer: C

Mathematics

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Perform the transformation.Write sec x in terms of sin x.

A.
B. ± 
C.
D.

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Solve the problem.It can be shown that if the angle of elevation from an observer to the top of an object is A and the angle of elevation d ft closer is B, then the height of the object is given by h =  ft.Find A if   and  Give your answer in degrees to the nearest hundredth.

A. 51.51° B. 55.72° C. 46.34° D. 39.97°

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Round the decimal to the given place value.11.8761, nearest hundredth

A. 11.88 B. 11.875 C. 11.89 D. 11.876

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Evaluate. 

A. 77 B. 462 C. 5544 D. 924

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