If r is a positive number and the point (x, y) is in the indicated quadrant, decide whether the given ratio is positive or negative.III, 
A. Positive
B. Negative
Answer: B
Mathematics
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Solve the problem.Find the tangent to y = cos x at x = .
A. y = - x -
B. y = - x +
C. y = 1
D. y = x +
Mathematics
Determine whether the expression is a polynomial. If it is a polynomial, give its degree.4x3 -
A. polynomial; degree 3 B. polynomial; degree 1 C. not a polynomial D. polynomial; degree -1
Mathematics
Verify that the equation is an identity.cos = -sin x
What will be an ideal response?
Mathematics
Solve the system. +
=
-
=
A.
B.
C.
D.
Mathematics