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shubhigandhi10
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14 Sep 2019, 12:56
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Can Pythagorean triplets like 5-12-13 rule be sufficient in solving any DS question? I came across a DS question in OG2020 where area of a right triangle was to be calculation and in Option A hypotenuse was 13. The solution considered it to be not sufficient since the in order to find the area at least 2 sides must be known. Not sure why they didn’t use 5-12-13 rule or there is some gap in my understanding
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Consider a semi-circle with a diameter, BC , 13 cm. Now point A can move anywhere along the circumference of the semi-circle; triangle BAC will be right angle triangle. What it tells us is that there are infinite number of right angled triangles possible, whose hypotenuse is 13 cm. Hence, you need to know either the length of one more side or any angle other than one that is 90 degrees to find the area of triangle. Also, unless it's given, you can't consider the unknown sides of triangle integers.
shubhigandhi10
Can Pythagorean triplets like 5-12-13 rule be sufficient in solving any DS question? I came across a DS question in OG2020 where area of a right triangle was to be calculation and in Option A hypotenuse was 13. The solution considered it to be not sufficient since the in order to find the area at least 2 sides must be known. Not sure why they didn’t use 5-12-13 rule or there is some gap in my understanding
Posted from my mobile device
Posted from my mobile device
globaldesi
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14 Sep 2019, 21:43
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13 can also be the hypotenuse when other both sides are equal and angle between them is 90 degrees.
it is no where mentioned that sides have to be integer
it is no where mentioned that sides have to be integer
