Question

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The sides of a triangle are of lenghts 15cm,36cm and 39cm.find the lenght of perpendicular from the opposite vertex to the side of lenght 39cm

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Answer 1

Step-by-step explanation:

As we know that, in a right triangle, square of the hypotenuse is equal to the sum of square of the other two sides.

Therefore,

${39}^{2} = {36}^{2} + {15}^{2}$

⇒1521=1296+225

⇒1521=1521

⇒L.H.S. = R.H.S.

Hence the triangle is right-angled triangle.

Answer 2

(39)² = (15)² + (36)²

1521 = 225 + 1296 = 1521

LHS = RHS