If csc theta = 8/7, which equation represents (cot theta) ?
a. cot theta=√15/8
b. cot theta=√15 / 7
c. cot theta=7√15 / 15
d. cot theta= 8√15 / 15

What can you determine about the solutions of this system

Find the area of a parallelogram with base 15 yards and height 21 2/3

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2