Write the function in terms of a function of the reference angle.cot 
A. cot 
B. cot 
C. -cot 
D. -cot 
Answer: D
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Which of the following is true about similar polygons??
A. ?If the side lengths are congruent and the angles are congruent, then the polygons are similar. B. ?If the side lengths are proportional and corresponding angles are proportional, then the polygons are similar. C. ?If the side lengths are proportional and corresponding angles are equal, then the polygons are similar. D. ?If the side lengths are equal and the corresponding angles are equal, then the polygons are similar. E. ?If the side lengths are proportional, then the polygons are similar.
Use the root test to determine if the series converges or diverges.
A. Diverges B. Converges
Find the indicated series by the given operation.Show that by differentiating term by term the expansion of 
the result is the expansion for 
A. 
(1 + 2x - 3x2 + 4x3 - . . .) = -2(1 + 3x - 6x2 + . . . )
B. 
(2x + 3x2 - 4x3 + . . .) = -2(1 - 3x + 6x2 - . . .)
C. 
(1 - 4x + 6x2 - 8x3 + . . .) = -2( 2 - 6x + 12x2 - . . .)
D. 
(1 - 2x + 3x2 - 4x3 + . . .) = -2(1 - 3x + 6x2 - . . .)
Use the quotient rule to divide and simplify.
A. 
B. 
C. 
D. 