We'll try to determine the length of b and the length of
c, considering the length of a side.
We'll multiply the
second relation with the value (3^1/2) and after that we'll add the equivalent obtained
relation to the first one.
(3^1/2)*a + (3^1/2)*b +
(3^1/2)*a - (3^1/2)*b = 3*c + c
We'll group the same
terms:
2*(3^1/2)*a =
4*c
(3^1/2)*a = 2
*c
c=
[(3^1/2)*a]/2
With the c value written in
function of "a" value, we'll go in the second relation and substitute
it:
a + b =
[(3^1/2)*(3^1/2)*a]/2
a + b =
3*a/2
We'll have the same denominator on the left side of
the equality:
2*a + 2*b =
3*a
2*b = 3*a - 2*a
2*b =
a
b =
a/2
If the triangle is a right one, then,
using the Pythagorean theorem, we'll have the following relation between the sides of
triangle:
a^2 = b^2 + c^2
Now,
we have to plug in the values of "b" and "c", in the relation
above:
a^2 = a^2/4 +
3*a^2/4
a^2 =
4*a^2/4
a^2 =
a^2
We've shown that the equality is true,
so the triangle is right, where "a" is hypotenuse and "b","c" are
cathetus.
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