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Trigonometric F...

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  • Question 1
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    In a triangle ABC, the line joining the circumcentre and the incentre is parallel to BC, then cos B + cos C =

  • Question 2
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    The value of the expression tan 1o tan 2o tan 3o … tan 89o is equal to

  • Question 3
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    If sin 2 θ = cos 3 θ, then θ is equal to (0 ≤ θ ≤ 90∘)

  • Question 4
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    The maximum value of sinα + sinβ + sinγ , where  α, β, γ are positive real numbers satisfying α + β + γ = π is

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