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Saturday, 28 January 2017

Trignometry - Basics- Quantitative Aptitude

In a right angled triangle as shown in the figure below, the ratios are given by the following trigonometric functions of the known angle A, where a, b and c refer to the lengths of the sides in the accompanying figure
  • Sine function (sin), is defined as the ratio of the side opposite the angle to the hypotenuse.
  • Cosine function (cos), is defined as the ratio of the adjacent leg to the hypotenuse.
  • Tangent function (tan), defined as the ratio of the opposite leg to the adjacent leg.

The reciprocals of these functions are named the cosecant (csc or cosec), secant (sec), and cotangent (cot), respectively:

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