If sum of the two legs of a right angle triangles is 49 inches and the hypotenuse is 41 inches, the two legs of the triangle are:

A     14.35

B    40,9

C    30.9

D    42.7

Solution

Correct Answer: Option B

 

বড় অংশের দীর্ঘ =x ছোট অংশের দীর্ঘ = 49-x

পিথাগোরাসের মতে , 412=(49-X)2+x2 or, x2-49x+360=0 or,x2-49x+360=0 or,x2-40x-9x+360=0 or,(x-40)(x-9)=0 or, x=40,9  

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