[" 1.निम्नलिलित तादास्यों को सिद्ध करें ...

[" 1.निम्नलिलित तादास्यों को सिद्ध करें (Prove the following identities.): "],[" (i) "cos theta*tan theta=sin theta],[" (ii) "tan theta=(sin theta)/(sqrt(1-sin^(2)theta))]

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