Answer:
3
Step-by-step explanation:
All factorials 5 and above are evenly divisible by 15, so have no remainder. Thus, you are interested in ...
mod(1! +2! +3! +4!, 15) = mod(1 +2 +6 +24, 15)
= mod(33, 15) = 3
The remainder is 3.
Answer:
I think it is acute because if the angle was over 90 degrees it would be and obtuse then
Step-by-step explanation: I hope this helps u out very much thank you :)