ചിത്രത്തിൽ, ∠BAC = ∠BCD, AB = 32 സെ.മീ., BD = 18 സെ.മീ. എന്നിങ്ങനെ ആണെങ്കിൽ BC വശത്തിന്റെ നീളം കണ്ടെത്തുക.

F1 Ashish 14-9-2020 Swati D10

  1. 20 സെ.മീ.
  2. 24 സെ.മീ.
  3. 30 സെ.മീ.
  4. 28 സെ.മീ.

Answer (Detailed Solution Below)

Option 2 : 24 സെ.മീ.
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Detailed Solution

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തന്നിരിക്കുന്നത്:

∠BAC = ∠BCD, AB = 32 സെ.മീ., BD = 18 സെ.മീ.

ആശയം:

രണ്ട് ത്രികോണങ്ങൾ സമാനമാണെങ്കിൽ, ബന്ധപ്പെട്ട വശങ്ങളുടെ അനുപാതം തുല്യമായിരിക്കും.

കണക്കുകൂട്ടൽ:

F1 Ashish 14-9-2020 Swati D10

ത്രികോണം ABC, CBD എന്നിവയിൽ;

∠BAC = ∠BCD

∠B പൊതുവായതാണ്

അതിനാൽ, ത്രികോണങ്ങൾ ABC, CBD എന്നിവ, AA സാദൃശ്യം അനുസരിച്ച് സമാനമാണ്.

∴ AB/CB = BC/BD

⇒ BC2 = 32 × 18 = 576

BC 24 സെ.മീ. ആണ്.

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