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Trigonometry - Most important formulas

  1. \(sin^2\alpha+cos^2\alpha=1\)
     
  2. \(sec^2\alpha - tan^2 \alpha=1\)
     
  3. \(sce^2\alpha-cot^2\alpha=1\)
     
  4. \(tan\alpha={sin\alpha \over cos \alpha}\)
     
  5. \(cot\alpha={cos\alpha \over sin \alpha}\)
     
  6. \(tan\alpha .cot\alpha=1\)
     
  7. \(sce\alpha={1 \over cos\alpha}\)
     
  8. \(cosec\alpha={1 \over sin\alpha}\)