Complete the identity.cos (tan-1 v) = ?
A. v
B. 
C. 
D. 
Answer: B
Mathematics
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Provide an appropriate response.Solve the system of nonlinear equations:x2 - y2 = 9x + y = 0
A. (3, -3) B. (5, 4) C. both A and B D. neither A nor B
Mathematics
Solve the equation by the square root method.7x2 = 28
A. {0}
B. {-2
, 2
}
C. {-7, 7}
D. {-2, 2}
Mathematics
Graph the pair of parametric equations in the rectangular coordinate system.x = t , y = 
; 0 ? t ? 3
A. 
B. 
C. 
D. 
Mathematics
Graph y = f(x). Write the domain of f in interval notation.f(x) = (x + 4)1/4
A. [0, ?)
B. [-4, ?)
C. [4, ?)
D. [0, ?)
Mathematics