tan A = \(\frac{3}{4}\) எனில், \(\frac{cos A - sin A}{cos A + sin A}\) இன் மதிப்பு என்ன?

1
\(\frac{1}{4}\)
2
\(\frac{1}{3}\)
3
\(\frac{1}{7}\)
4
\(\frac{1}{8}\)

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