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CBSE Class 10 Answered

Please answer quickly , i have my math exam tomorrow....
Asked by | 21 Dec, 2008, 04:12: PM
answered-by-expert Expert Answer

B=90o

So, AC2=AB2+BC2 (By pythagoras theorem)

AC2=AD2-BC2-CD2+BC2 (Using AD2=AB2+BC2+CD2)

Hence, AD2=AC2+CD2

Hence, C=90o

Answered by | 23 Dec, 2008, 11:54: AM
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