Use the fundamental identities to find the value of the trigonometric function.Find cos ? if tan ? = 
and ? is in quadrant III.
A. 
B. - 
C. - 
D. 
Answer: C
Mathematics
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Solve. 
? 9
A. x ? -1 or x ? 17 B. -9 ? x ? 9 C. -1 ? x ? 17 D. -17 ? x ? 1
Mathematics
A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.V = 
Bh; V = 72, h = 9
A. B = 81 B. B = 648 C. B = 8 D. B = 24
Mathematics
Provide an appropriate response.The term "compounding semiannually" means:
A. compounding four times a year B. compounding twice a year C. compounding twelve times a year D. none of these
Mathematics
Find all real solutions to the equation.x-2/3 = 25
A. {-125}
B. ?
C. 
D. {125}
Mathematics