Thursday, December 31, 2015

What kind of triangle has the relations between a, b, c, sides: (3^1/2)*a - (3^1/2)*b = c a + b = (3^1/2)*c

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.

No comments:

Post a Comment

Comment on the setting and character of "The Fall of the House of Usher."How does setting act as a character?

Excellent observation, as it identifies how the settings of Poe's stories reflect the characters of their protagonists. Whet...