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  1. What is the value of cosec (–1410°) ?
    1. 2
      √3
    2. 2
    3. √3
      2
    4. 2
      √3
Correct Option: B

cosec (–1410°) = – cosec (1410°)
∵cosec (– θ)
= – cosecθ = –cosec (360° × 3 + 330°)
= –cosec (330°) = –cosec (360° – 30°)
= cosec 30°
= 2


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