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[{1-cot^2(α-45°)}/{1+cot^2(α-45°)} + cos(α/2)cot4α] cosec(9α/2)=cosec4a Prove it... [{1-cot^2(α-45°)}/{1+cot^2(α-45°)} +cos(α/2)cot4α] cosec(9α/2)=cosec4a Prove it...
Dear Adarsh !st question is incomplete. Please check and repost it. You can attach an image too. I will be happy to help you. RegardsArun
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