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Answer:
∠ XYZ ≈ 72.9°
Step-by-step explanation:
Using the tangent ratio in the right triangle
tanXYZ = =
=
, thus
XYZ = (
) ≈ 72.9° to 1 dec. place )
Consecutive numbers differ by one, which means that if you start with a certain integer , you obtain the next integer by adding one.
So, if you start with , the three consecutive numbers are
The sum of these three numbers is
This number is divisible by 3 because you can write it as
Note that this is true in general: the sum of three consecutive numbers is always divisible by three, because it is three times the middle number.