\(\cfrac{sin\theta+cos\theta}{sin\theta-cos\theta}\) = 7 হলে, tan\(\theta\) এর মান নির্ণয় করো।
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\(\cfrac{sinθ+cosθ}{sinθ-cosθ}=7 \)
বা, \(7sinθ-7cosθ=sinθ+cosθ\)
বা, \(7sinθ-sinθ=cosθ+7cosθ \)
বা, \(6sinθ=8cosθ \)
বা, \(\cfrac{sinθ}{cosθ}=\cfrac{8}{6}\)
বা, \(tanθ=\cfrac{4}{3} \) (Answer)
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