θ ತೀವ್ರ ಕೋನವಾಗಿದ್ದರೆ ಮತ್ತು cos2 θ - sin2 θ = -1/2; ನಂತರ [cos22θ + cot2 (θ/2)] ನ ಮೌಲ್ಯ:

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

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