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Trigonometric Ratios

Trigonometric ratios are ratios of sides in a triangle and there are six trigonometric ratios. In a right-angle triangle, the six trigonometric ratios are defined as:

  1. sin θ = (Opposite Side/Hypotenuse = AB/AC
  2. cos θ = Adjacent Side/Hypotenuse = BC/AC
  3. tan θ = Opposite side/adjacent side = AB/BC
  4. cosec θ = 1/sin θ = Hypotenuse/Opposite Side = AC/AB
  5. sec θ = 1/cos θ = Hypotenuse/Adjacent Side = AC/BC
  6. cot θ = 1/tan θ = Adjacent Side/Opposite Side = BC/AB

2cosacosb Formula

2cosacosb is an important trigonometric formula and is equal to cos (A + B) + cos (A – B). It is one of the product-to-sum formulae that is used to convert the product into a sum.

This formula is derived using the angle sum and angle difference formulas. Before learning more about the 2sinAsinB Formula, let’s first learn in brief about, Trigonometric Ratios

Table of Content

  • Trigonometric Ratios
  • 2cosacosb Formula
  • 2cosacosb Formula Derivation
  • Sample Problems on 2cosacosb Formula
  • FAQs on 2cosAcosB

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Trigonometric ratios are ratios of sides in a triangle and there are six trigonometric ratios. In a right-angle triangle, the six trigonometric ratios are defined as:...

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2cosacosb Formula Derivation

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Sample Problems on 2cosacosb Formula

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FAQs on 2cosAcosB

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