KEAM 2011 Math Paper

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Question : 116 of 120

Marks: +1, -0

If α,β,γ∊[0,π] and if α,β,γ are in A.P. then

sinα−sinγ

cosγ−cosα

is equal to

sinβ
cosβ
cotβ
2cotβ
cosecβ

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