Answer:
90 degrees
That is an isosceles right triangle.
Step-by-step explanation:
Sine (46) = IG / 11
IG = sine (46) * 11
IG = 0.71934 * 11
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IG = 7.91274
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5.
Let x be the age of the father and y be the age of the son. As of today, he's 3 times older, so we have 
10 years ago their ages were, respectively, x-10 and y-10, and the father was 5 times older: 
So, we have the system

Using the first equation, we can substitute every occurrence of "x" with "3y" in the second equation:

So, the son is 20 years old, which means that the father is 60 years old.
Indeed, 10 years ago they were 10 and 50 years old, so the father was 5 times older.
6.
Let x be the age of the grandfather and y the age of the granddaughter. We know that the grandfather is 10 times older: 
He also is 54 years older: 
Again, if we substitute x=10y in the second equation we have

It’s talking abt money so how much money did they get total in each part and put the right amount for that part where it goes