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General Identities MCQs

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1. Sin(α + β) is equal to:





2. Cos(α – β) is equal to:





3. tan(45° – x) is equal to:





4. cos(θ + π/2) is equal to:





5. Sin(90° – θ) is equal to:





6. Sin(x – π) is equal to:





7. tan(θ + π/2) is equal to:





8. Cos(θ + π) is equal to:





9. Cos(θ + 2π) is equal to:





10. tan(3θ + 2π) is equal to:





11. Sin α + β / Cos α Sin β is equal to:





12. Sin 2α is equal to:





13. 2 Cos² θ is equal to:





14. (Cos α + Cos β)(Cos α – Cos β) is equal to:





15. Cos A – Cos B is equal to:





16. Sin(A + B) – Sin(A – B) is equal to:





17. Cos(A – B) – Cos(A + B) is equal to:





18. Sin 5θ – Sin 2θ is equal to:





19. Sin 5θ + Sin θ is equal to:





20. 2 Sin 6θ Cos 2θ is equal to:





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