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प्रश्न
Evaluate the following :
cosec 31° − sec 59°
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उत्तर
We have to find cosec 31° − sec 59°
Since `cosec(90^@ - theta) = sec theta`
`= cosec 31^@ - sec 59^@`
`= cosec (90^@ - 59^@) - sec 59^@`
`= sec 59^@ - sec 59^@`
= 0
So value of cosec 31° − sec 59° is 0
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