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Sin1sin2sin3_______sin179

Sin1sin2sin3_______sin179

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1 Answers

Ravi
askIITians Faculty 69 Points
8 years ago
Start by writing Sin(179) as sin(180-1)

and sin(180-1)=sin1

Combine them to get (sin 1. sin 2..........sin 89)2 sin 90
sin 89=sin(90-1)=cos 1

Use this to obtain sin 2x and proceed similarily to combine the corresponding terms from both ends of the series to get the answer.

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