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सिद्ध कीजिए : (1 + sin (90^(@) - th...

सिद्ध कीजिए :
`(1 + sin (90^(@) - theta))/(cos (90^(@) - theta)) + (cos (90^(@) - theta))/(1 + sin (90^(@) - theta) ) = 2 " cosec " theta `

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