Question
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Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFఉపయోగించిన భావన:
టాంజెంట్ సెకెంట్ సిద్ధాంతం ప్రకారం
DE 2 = DB × DA
గణన:
DB × DA = DE2
⇒ DB × (5 + DB) = 62
⇒ DB × (5 + DB) = 36
⇒ 5DB + DB2 = 36
⇒ DB2 + 5DB - 36 = 0
పై వర్గ సమీకరణాన్ని పరిష్కరించడం,
DB = (-9) లేదా DB = 4
పొడవు ప్రతికూలంగా ఉండకూడదు కాబట్టి, DB = 4 సెం.మీ
∴ DB పొడవు 4 సెం.మీ.
Shortcut Trick
DB × (5 + DB) = 36
ఎంపికలను తనిఖీ చేయడం ద్వారా, మేము ఈ సమీకరణాన్ని తక్కువ సమయంలో పరిష్కరించగలము
అందువలన, ఎంపిక 03 సమీకరణాన్ని సంతృప్తిపరుస్తుంది
∴ DB పొడవు 4 సెం.మీ.
Last updated on Jul 5, 2025
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