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| 2022-12-03 | सिद्ध कीजिए कि: |
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| 2022-12-03 | यदि \( \tan ^{2} \theta=1-e^{2} \), तो सिद्ध कीजिए कि \( \sec \theta+\tan ^{3} \theta \operatorn... |
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