Question

In the figure AB || PQ || CD. Prove that 1/x+1/y = 1/z

Answer 1

Sol.

qp//cd

Bq/bd=z/y .Bpt

Qd/bd =z/x .bpt

1/x+1/y=bq/z bd+qd/ z bd

1/x+1/y=bd/z bd

1/x+1/y=1/z

Hence proved

hope answer was helpful

Answer 2

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