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