B Which expression represents the approximate length of
BC?
3
(3) sin(669
sin (38)
66°
38°
A
С
0
sin (66)
(3) sin (389)
Law of sines: sin(A)
sin(B)
b
sin()
С
a
0 (3) sin(389)
sin (669)
sin (38)
(3) sin(66)

When constructing a perpendicular line through a point off a line, how can you verify that the lines constructed are perpendicular? check the angles used in the construction with a straightedge to ensure consistency. check the distance along the lines at several places with a compass to ensure they are the same length. check the intersecting lines with the corner of a piece of paper to ensure the lines create 90° angles. check the distance between the lines at several places with a compass to ensure they are equidistant. question 2(multiple choice worth 1 points) (01.03 lc) which of the following steps is included in the construction of a perpendicular line through a point on a line? connect arcs that are above and below the given line with a straightedge. connect arcs that are above the original line with a straightedge. create arcs on either side of a point that is off the given line. create a copied angle by using the first two lines as the original angle.