Find the length of the curve.x = 6 cos t, y = 6 sin t, 0 ? t ? ?
A. 12?
B. 36?
C. ?
D. 6?
Answer: D
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Find the sum Sn of the first n terms of the geometric sequence.3, 
, 
, 
, . . . ; n = 8
A. 
B. 
C. 
D. 
Give an appropriate answer to the question.Determine the sum of the degrees of the vertices in a tree with 18 vertices.
A. 35 B. 38 C. 17 D. 34
Determine whether the statement is true or false.If c and d are complex numbers, then 
= 
- 
A. True B. False
A woman entering an outside glass elevator on the ground floor of a hotel glances up to the top of the building across the street and notices that the angle of elevation is 50°. She rides the elevator up three floors (70 feet) and finds that the angle of elevation to the top of the building across the street is 34°. How tall is the building across the street? (Give your answer to the nearest foot.) ? Height of building = __________ ft
Fill in the blank(s) with the appropriate word(s).