The 2 angles are complemantary or form right angles so

so

. Plugging that into BDC we get 11
Here are the answers to problem 1..
a) 11
b) 5/36
c) 25 Times because 7 has a probability of 16.667%
d) 25 Times because 10, 11, and 12 have a probability sum of 16.667% ironically...
Hope this helps. :)
Answer: any neative number thats -16 and up
for example -16, -17,-18 etc
Step-by-step explanation: