Ex 7.3, 18 - Integrate cos 2x + 2 sin2 x / cos2 x dx - Integration using trigo identities - 2x formulae

  1. Chapter 7 Class 12 Integrals
  2. Serial order wise
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Ex 7.3, 18 - Chapter 7 Class 12 Integrals - NCERT (cos⁡2𝑥 + 2 sin^2⁡𝑥)/cos^2⁡𝑥 𝑑𝑥 ∫(cos⁡2𝑥 + 2 sin^2⁡𝑥)/cos^2⁡𝑥 dx = ∫(1 − 2 sin^2⁡𝑥 + 2 sin^2⁡𝑥)/cos^2⁡𝑥 dx (Using cos 2x = 1 - 2 sin^2 x) = ∫1/cos^2⁡𝑥 dx = ∫sec^2⁡𝑥 dx = tan x + C

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