77-13=64....64÷2=32 the age should be 32
The angle you want - call it <em>θ</em> - is such that
tan(<em>θ</em>) = FC / AC
Find the length of the diagonal AC, i.e. a diagonal of the rectangle ABCD. ABC forms a right triangle with legs AB = 70 and BC = 50, so
AC² = AB² + BC²
→ AC = √(70² + 50²) = 10 √74
Find FC using the given angle of the sloping face:
tan(30º) = FC / BC
→ 1/√3 = FC / 50
→ FC = 50/√3
Now solve for <em>θ</em> :
tan(<em>θ</em>) = (50/√3) / (10 √74)
→ tan(<em>θ</em>) = 5/√222
→ <em>θ</em> ≈ 18.6º
I don't have my glasss on and there are too many 1's which are messing with my eyes but all i have to say is PEMDAS
bonus question - i used to like school but at this point i just want to graduate
We know that :
If f(x) and g(x) are Two Functions Defined under same Domain, then Composite Function : (f o g)(x) = f(g(x))
Given : f(x) =
and g(x) = 
⇒ (f o g)(x) = f(g(x))
⇒ 
⇒ 
1st Option is the Answer