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सिद्ध करो : ( cos 80^(@))/( sin 10^(@))...

सिद्ध करो : `( cos 80^(@))/( sin 10^(@))+ cos 59^(@) "cosec " 31^(@)=2`

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(cos80^(@))/(sin10^(@))+cos59^(@)cos ec31^(@)=2

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