Answer:

Step-by-step explanation:
<em><u>Identity Used </u></em>: 

Answer:
A) Rectangle
Step-by-step explanation:
Hope this helps :D
Answer:
0.00768
Step-by-step explanation:
That would be 20 x 19 x 18 which equals 6840.
After first place is chosen, 19 spots left and so on.
The answer is 6840 ways.
tan(3θ + 17) = cot(θ + 7)
(3θ + 17) + (θ + 7) = 90
(3θ + θ) + (17 + 7) = 90
4θ + 24 = 90
- 24 - 24
4θ = 66
4 4
θ = 16.5