In ΔABC, ADBC and AD2=BD×CD. Prove that BAC=90.

A B D C


Answer:


Step by Step Explanation:
  1. Given:
    ADBC and AD2=BD×CD

    Here, we have to find the value of BAC.
  2. Now, we have: AD2=BD×CDBDAD=ADCD

    Now, in ΔDBA and ΔDAC, we have

    A B D C 2 1 BDA=ADC=90 and BDAD=ADCD

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