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Indian Navy AA (Artificer Apprentice) Triangles — practice questions

Explore 1 free Triangles questions in Indian Navy AA (Artificer Apprentice) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Triangles questions and exercises with answers

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In triangle ABC right-angled at B, BD is perpendicular to AC. If AB = 5 cm and BC = 12 cm, then BD equalsRead the answer and worked solution →

Worked practice questions

In triangle ABC right-angled at B, BD is perpendicular to AC. If AB = 5 cm and BC = 12 cm, then BD equals

  1. 12/5 cm
  2. 13/12 cm
  3. 5/12 cm
  4. 60/13 cm
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Correct answer: D. 60/13 cm

1. Area of triangle ABC = 1/2 × AB × BC = 1/2 × 5 × 12 = 30 sq cm. 2. AC by Pythagoras = square root of (25 + 144) = 13 cm. 3. Area also equals 1/2 × AC × BD = 1/2 × 13 × BD. So BD = 60/13 cm. _Source: syllabus Mathematics, Ch 6 "Triangles", §6.5_

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