state gov Bihar Police SI (दरोगा) Mock Test Series 2025 Quantitative Aptitude Trigonometry Circular Measure of Angles

Find the value of \(\frac{8 \sin 30° \sin^2 60° - 4 \sin 90°- \sec^2 45°}{\tan^2 45°- \cot^2 30°}\)

1
5/2
2
- 1/2
3
3/4
4
3/2
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