The number of ordered pairs (α, β), where α, β ∈ (–π, π) satisfying cos (α – β) =1 and (…
Mathematics · JEE Advanced · NTA Exams — Trigonometry
The number of ordered pairs (α, β), where α, β ∈ (–π, π) satisfying cos (α – β) =1 and \(\cos (\alpha+\beta)=\frac{1}{\mathrm{e}}\) is : (e > 1)
- 0
- 1
- 2
- 4
Answer
(D) 4
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