Explanation: 
Another Explanation (5):
sinA = 12/13 হলে, tanA এর মান নির্ণয়:
আমরা জানি, \(sin^2A + cos^2A = 1\)
অতএব, \(cos^2A = 1 - sin^2A\)
\(cos^2A = 1 - (12/13)^2\)
\(cos^2A = 1 - 144/169\)
\(cos^2A = (169 - 144) / 169\)
\(cos^2A = 25/169\)
সুতরাং, \(cosA = \pm \sqrt{25/169}\)
\(cosA = \pm 5/13\)
আমরা জানি, \(tanA = sinA / cosA\)
\(tanA = (12/13) / (\pm 5/13)\)
\(tanA = \pm (12/13) * (13/5)\)
\(tanA = \pm 12/5\)
অতএব, \(tanA = \pm 12/5\) 🥳🎉
