railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

What is the value of sin(180 - θ).sin (90 - θ) - [cot(90 - θ) /1 + tan2θ]?

1
cos2θ.sinθ
2
0
3
1
4
sin2θ.cosθ
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