Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

0° < θ < 90° எனில், \(\frac{cot\theta - 1}{1 - tan\theta} \div \left( \frac{sin\theta}{1 + cos\theta} + \frac{1 + cos\theta}{sin\theta} \right)\) இன் மதிப்பு:

1
\(\frac{cos\theta}{2}\)
2
\(\frac{sec\theta}{2}\)
3
\(cos\theta\)
4
\(sin\theta\)

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