tan A = \(\frac{2}{5}\) என்றால் \(\frac{\sec ^2 A}{\operatorname{cosec}^2 A}\)இன் மதிப்பைக் கண்டறியவும்.

1
\(\frac{2}{5}\)
2
\(\frac{4}{25}\)
3
\(\frac{9}{25}\)
4
\(\frac{3}{5}\)

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