In a right angle triangle ,the hypotenuse is 10 cm more than the shortest side. If third side is 6 CM less than the hypotenuse, find the sides of the right angle triangle
Answers
According to this question, the final equation you will get is
x² - 12x - 84 = 0 (I took the shortest side as x cm)
The values of x you will get are irrational and those will be (by quadratic formula),
x = (12 +/- √480)/2 cm
Sides of the right angle triangle:
Shorter side = 16.955 cm
Hypotenuse = x + 10 = 16.955 + 10 = 26.955 cm
Third side = x + 4 = 16.955 + 4 = 20.955 cm
Step-by-step explanation:
From question, the shape is a right angled triangle.
On applying Pythagoras theorem, we get,
(Hypotenuse)² = (Base)² + (Height)² → (Equation 1)
From question, let the unknown side be 'x'.
Shorter Side = x cm
Hypotenuse = x + 10 cm
Third Side = hypotenuse - 6 cm = x + 10 - 6 = x + 4 cm
On substituting the values in equation (1), we get,
(x + 10)² = x² + (x + 4)²
x² + 100 + 20x = x² + x² + 16 + 8x
x² + 100 + 20x = 2x² + 16 + 8x
(2 - 1)x² + (8 - 20)x + (16 - 100) = 0
x² - 12x - 84 = 0
The value of x is given as:
x = (b ± √(b² - 4ac))/2a
x = (12 ± √(144 + 336))/2
x = (12 ± 21.91)/2
x = 16.955 and -4.955
Since, x cannot be negative then the value of x is 16.955 cm.