nursing AIIMS CRE ESIC Nursing Officer 2025 Mock Test Series Quantitative Aptitude Trigonometry

​\(\frac{1 - \tan^2 45^\circ}{1 + \tan^2 45^\circ}\)​​The value of \(\frac{1 - \tan^2 45^\circ}{1 + \tan^2 45^\circ}\) is:

1
sin 45°
2
tam 90°
3
0
4
1
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