Plz answer 2nd Question plz urgent hai
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Hello this was the answer of your question
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2) I. By theorem of internal division of chords
Dm×Dn=Dr×Ds
8×DN=15×4
DN=15×4/8
ANS. DN=7.5.
II. LET DS=X
DR+DS=RS (R–D–S)
DR+X=18
DR=18-X
BY THEOREM OF INTERNAL DIVISIONS OF CHORDS,
DM×DN=DR×DS
9×8=(18-x)×x
72=18x-x^2
X^2-18x+72=0
Solve by factorisation
X=12 or X=6
DS=12
OR
DS=6
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