1.

Evaluate: `"cosec"(-1410)^(@)`

Answer» `=-"cosec"1410^(@)`
`=-"cosec"(3 xx 360^(@) + 330^(@))`
`=-"cosec"330^(@)`
`=-"cosec"(360^(@)-30^(@))`
`="cosec"30^(@)=2` Ans.


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