1 General Mental and Psychological Abilities · 1.4.2 Geometry and trigonometry

1.4.2.8 Heights and distances

Draw the right triangle, use tan (height over horizontal distance) at each angle, and remember that 30°, 45° and 60° turn every answer into a multiple of √3 or 1.

  • APPSC Group 1
  • Advanced level
  • 7 min read
  • Full course

Key terms

  • angle of elevation
  • angle of depression
  • tower and shadow
  • two observers
  • moving observer
  • flagstaff on building
  • lighthouse and ships
  • reflection in a lake
  • aeroplane speed
  • complementary angles of elevation

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

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