Identify all of the symmetries in the following figure.
A. It has reflection symmetries; it can be reflected across a vertical line through its center, a horizontal line through its center, or either of its diagonals, and its appearance remains the same.
B. It has translation symmetry (if imagined to extend in both directions). It also has reflection symmetry (across a horizontal line between the jagged lines).
C. It has rotation symmetry; it can be rotated through 180° and its appearance remains the same. It also has translation symmetry (if imagined to extend in both directions).
D. None of these.
Answer: B
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Determine the number of triangles ABC possible with the given parts.a = 24, b = 21, A = 47°
A. 2 B. 0 C. 1 D. 3
Find all the real zeros of f(x) = 3x3 - 9x2 + 3x - 9.
A. x = 3
B. x = 3, 
C. x = 
, 
D. x = ±1, 3
E. x = 3, 1, -9
Differentiate.
Find ? to four significant digits for 0 ? ? < 2?.cos ? = 0.2816
A. 1.285, 1.856 B. 1.285, 4.427 C. 1.285, 4.998 D. 0.2855, 3.427