Evaluate the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Find the equation of the hyperbola satisfying the given conditions.Vertices at (0, 4) and (0, -4); foci at (0, 9) and (0, -9)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Evaluate the requested trigonometric function using the information given. csc ? = - 
; 3?/2 < ? < 2?Find cos ?.
A. - 
B. 
C. 
D. - 
Mathematics
For the given rectangular equation, write an equivalent polar equation.y = x
A. sin ? = - cos ? B. r = sin ? C. r = cos ? D. sin ? = cos ?
Mathematics
Subtract. Write a mixed numeral for the answer.
A. 127
B. 13
C. 
D. 10
Mathematics