Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

ఒకవేళ tan A = \(\frac{3}{4}\) , అప్పుడు \(\frac{cos A - sin A}{cos A + sin A}\) విలువ:

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

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