Find the function value.Find cos 
, given that sec ? = 4 and 0° < ? < 90°.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Evaluate the validity of the chain of conditionals.Premise: If I pay my bills on time, then my credit will be good.Premise: If my credit is good, then I will become a movie star.Conclusion: If I pay my bills on time, then I will become a movie star.
A. Valid B. Invalid
Mathematics
Find 
.ln 6xy = ex+y
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.What form do planes perpendicular to the y-axis have in cylindrical coordinates?
A. r = a sin ? B. r = a csc ? C. r = a cos ? D. r = a sec ?
Mathematics
Use factoring by grouping to solve the equation.5x3 + 3x2 - 125x - 75 = 0
A. - 
, -5, 5
B. - 
, -5, 1
C. -5, 5, 
D. - 
, -5, 5
Mathematics