Height and Distance – Important Formulas

1. Trigonometry:

In a right angled 1-sym-tag OAB, where 1-sym-angBOA = 1-sym-tta,

Trigonometry

2. Trigonometrical Identities:

Trigonometrical Identities

3. Values of T-ratios

Values of T-ratios

4. Angle of Elevation:

Angle of Elevation

Suppose a man from a point O looks up at an object P, placed above the level of his eye. Then, the angle which the line of sight makes with the horizontal through O, is called the angle of elevation of P as seen from O.

1-sym-tfr Angle of elevation of P from O = 1-sym-angAOP.

5. Angle of Depression:

Angle of Depression

Suppose a man from a point O looks down at an object P, placed below the level of his eye, then the angle which the line of sight makes with the horizontal through O, is called the angle of depression of P as seen from O.

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