Height and Distance


Home > Aptitude > Height and Distance
'

Height & Distance


Trigonometry Rules



trigonometry formulae


trigonometry Identities


Basic Trigonometric Values


trigonometry values

Trigonometric Formulas


Degrees to Radians and vice versa
360°= 2π radian


Trigonometry Quotient Formulas
* tanθ=sinθ cosθ
* cotθ=cosθ sinθ

Trigonometry - Reciprocal Formulas
* cscθ = 1/sinθ
* secθ = 1/cosθ
* cotθ = 1/tanθ

Trigonometry - Pythagorean Formulas
* sin2θ + cos2θ = 1
* sec2θ - tan2θ=1
* csc2θ - cot2θ=1


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, angle of elevation is the angle between the horizontal and the line from the object to the observer's eye (the line of sight).
i.e., angle of elevation = angle AOP


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, angle of depression is the angle between the horizontal and the observer's line of sight
i.e., angle of depression = angle AOP