Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

যদি θ সূক্ষ্মকোণ হয় এবং cos2 θ − sin2 θ = −1/2 হয়; তাহলে [cos22θ + cot2 (θ/2)] কত: 

1
3/2
2
13/2
3
13/4
4
5/4

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