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(i) (1+tantheta+sectheta)(1+cottheta-cos...

(i) `(1+tantheta+sectheta)(1+cottheta-cosec theta)` का मान ज्ञात कीजिए ।
(ii) सिद्ध काजिए कि, `(tanA-sinA)/(tanA+sinA)=(secA-1)/(secA+1)`

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