Question
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Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFवापरलेली संकल्पना:
स्पर्शिका छेदक प्रमेयानुसार
DE2 = DB × DA
गणना:
DB × DA = DE2
⇒ DB × (5 + DB) = 62
⇒ DB × (5 + DB) = 36
⇒ 5DB + DB2 = 36
⇒ DB2 + 5DB - 36 = 0
वरील द्विघात समीकरण सोडवणे,
DB = (-9) किंवा DB = 4
लांबी ऋणात्मक असू शकत नाही, DB = 4 सेमी
∴ DB ची लांबी 4 सेमी आहे.
Shortcut Trick
DB × (5 + DB) = 36
पर्याय तपासून आपण हे समीकरण कमी वेळेत सोडवू शकतो
अशा प्रकारे, पर्याय 03 समीकरणाचे समाधान करतो
∴ DB ची लांबी 4 सेमी आहे.
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