Find the exact value by using a difference identity.tan 105°
A. 
B. 2 + 
C. -2 - 
D. 
Answer: C
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Solve the problem.A 69-inch by 32-inch door contains a stained glass elliptical insert as shown. One vertex of the ellipse is located 8 inches from the top of the door. The other vertex is located 25 inches from the bottom of the door. The endpoints of the minor axis are located 7 inches from each side. Find the equation of the elliptical decorative glass insert. (Assume that the center of the elliptical glass insert is at the origin.) 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve.|6x| + 5 = 13
A. {8, -8}
B. 
C. 
D. ?
Find the equation of the line passing through the indicated two points in standard form.(8, -9) and (0, 2)
A. 17x - 2y = -4 B. -11x + 8y = 16 C. 11x + 8y = 16 D. -17x + 2y = -4
Classify the equation as a contradiction, an identity, or a conditional equation. 6(x + 5) - 8(x + 5) = -2x + 70
A. Contradiction B. Conditional C. Identity