\(\frac{{cos\theta }}{{1 - sin\theta }} + \frac{{cos\theta }}{{1 + sin\theta }} = 4\), అయితే‘θ’ విలువ ఎంత? ఇక్కడ ‘θ’ అల్ప కోణం.

1
30°
2
45°
3
75°
4
60°

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