state gov Bihar Police Constable (सिपाही) Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

What is the simplified value of sin2(90 – θ) – [{sin(90 – θ)sin θ}/tanθ]?

1
1
2
cosec θ
3
0
4
cos θ
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