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Express sin 81^(@) +tan 81^(@) in terms ...

Express `sin 81^(@) +tan 81^(@) `in terms of trigonometric ratio of angles between `0^(@) and 45^(@) `

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The correct Answer is:
Then `,sin 81^(@) +tan 81^(@) =cos 9^(@) +cot 9^(@) `
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