Solve the problem.A contractor needs to know the height of a building to estimate the cost of a job. From a point 89 feet away from the base of the building, the angle of elevation to the top of the building is found to be 
Find the height of the building. Round your answer to the hundredths place.
A. 74.71 ft
B. 76.24 ft
C. 80.47 ft
D. 79.14 ft
Answer: B
Mathematics
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Find the exact circular function value.csc 
A. - 
B. - 
C. - 
D. - 
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Solve the equation. Express radicals in simplest form.-2k2 - 1 = -19
A. ±6 B. -9.5 C. 3 D. ±3
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Find the sum or difference. Write the answer in standard form, a + bi.(9 + 9i) - (-6 + i)
A. 3 + 10i B. 15 - 8i C. 15 + 8i D. -15 - 8i
Mathematics
Find the domain and the range for the function.
A. D: 
, R: 
B. D: 
, R: 
C. D: 
, R: 
D. D: 
, R: 
Mathematics