ABCలో, రెండు విభాగాలు A మరియు D అనేది . మీ ( ) = 4.2 సెం.మీ, మీ ( ) = 4 సెం.మీ మరియు మీ ( ) = 7 సెం.మీ, అప్పుడు మీ ( కనుగొనండి.

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RRB Group D 6 Oct 2022 Shift 1 Official Paper
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  1. 5.2 సెం.మీ
  2. 4.2 సెం.మీ
  3. 4.8 సెం.మీ
  4. 5.6 సెం.మీ

Answer (Detailed Solution Below)

Option 4 : 5.6 సెం.మీ
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RRB Group D Full Test 1
100 Qs. 100 Marks 90 Mins

Detailed Solution

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ఇచ్చిన:

ABC లో , రెండు విభాగాలు A మరియు D అనేది . మీ పొడవు ( ) = 4.2 సెం.మీ, మీ ( ) = 4 సెం.మీ మరియు మీ ( ) = 7. సెం.మీ.

లెక్కలు:

DC = BC - BD = 7 - 4 = 3 సెం.మీ

యాంగిల్ బైసెక్టర్ సిద్ధాంతం ప్రకారం:

AB: AC = BD: DC

⇒ AB : 4.2 = 4 : 3

⇒ AB = 4 × 4.2/3

⇒ AB = 5.6 సెం.మీ

అందువల్ల, అవసరమైన విలువ 5.6 సెం.మీ.

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