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