Explanation: 
Another Explanation (5):
দেওয়া আছে, \(sin\theta + cosec\theta = 2\)
আমরা জানি, \(cosec\theta = \frac{1}{sin\theta}\)
সুতরাং, \(sin\theta + \frac{1}{sin\theta} = 2\)
উভয় দিকে \(sin\theta\) দিয়ে গুণ করে পাই,
\(sin^2\theta + 1 = 2sin\theta\)
\(sin^2\theta - 2sin\theta + 1 = 0\)
\((sin\theta - 1)^2 = 0\)
\(sin\theta - 1 = 0\)
\(sin\theta = 1\)
তাহলে, \(cosec\theta = \frac{1}{sin\theta} = \frac{1}{1} = 1\)
এখন, \(sin^n\theta + cosec^n\theta = (1)^n + (1)^n = 1 + 1 = 2\)
অতএব, \(sin^n\theta + cosec^n\theta = 2\)🎉
