Find the exact value of the product.cos 225° cos 45°
A. - 
B. 
C. 1
D. 2
Answer: A
Mathematics
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Solve the problem.How close does the curve y = 
come to the point 
? (Hint: If you minimize the square of the distance, you can avoid square roots.)
A. The distance is minimized when x = 0; the minimum distance is 
units.
B. The distance is minimized when x = - 
; the minimum distance is 
units.
C. The distance is minimized when x = 3; the minimum distance is 
units.
D. The distance is minimized when x = 0; the minimum distance is 
units.
Mathematics
Find the eccentricity of the ellipse.16x2 + y2 = 16
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operations to decide whether the statement is true or false.-11 + 13 = 13 + (-11)
A. False B. True
Mathematics
Solve the equation.
= 
+ 3
A. {90} B. {-90} C. {45} D. {-45}
Mathematics