What is an angle of elevation?

It is the angle between the horizontal line and the line of sight to an object above the observer.

What is an angle of depression?

It is the angle between the horizontal line and the line of sight to an object below the observer.

Draw a labelled right-triangle diagram first, then identify the known sides and required quantity.

ICSE MathematicsClass 10Chapter 22

Chapter 22

Apply trigonometric ratios to solve heights-and-distances problems involving angles of elevation and depression.

TOPICS

Angle of elevationAngle of depressionLine of sightRight trianglesApplications

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