Question

In an isosceles right-angled triangle, ∆ABC, ∠B = 90°. If D and E are points on sides AB and BC respectively such that DB=1/3AB and BE=1/2BC, then
(1) 75(AE^2 + CD^2) = 25AC^2
(2) 85(AE^2 + CD^2) = 27AC^2
(3) 72(AE^2 + CD^2) = 85AC^2
(4) 85(AE^2 + CD^2) = 72AC^2

Answer 1

Answer:

your proof is in above pics

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