Graph the ellipse. Give the coordinates of the center, as well as the values of a and b.
+ 
= 1
A. center (0, 0), a = 7, b = 6
B. center (7, 6), a = 1, b = 1
C. center (0, 0), a = 6, b = 7
D. center (6, 7), a = 1, b = 1
Answer: C
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Write an equation for the parabola with vertex at the origin.Through (6, -12), opening downward
A. y = 
x2
B. x2 = - 
C. x = - 
y2
D. x2 = - 3y
Solve the problem.A gazebo is designed with 5 sides, and a roof truss runs from each corner to the center. You make two cuts on the end of each truss so that a point is formed as illustrated. What angle (to the nearest degree) must each cut be so that the trusses fit together in the center of the roof?
A. 90° B. 108° C. 72° D. 54°
Establish the identity.
= cot 
What will be an ideal response?
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.tan 72°
A. -0.33 B. 3.01 C. 3.08 D. -0.26