In triangle ABC, CD perpendicular to AB,CA=2AD and BD=3AC. Prove that

1.	In triangle ABC, CD perpendicular to AB,CA=2AD and BD=3AC. Prove that angle BCA =90∘
Answer» In triangle ABC, CD perpendicular to AB,CA=2AD and BD=3AC. Prove that angle BCA $= 90^{\circ}$

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