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Model Paper 3 — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsModel Paper 31 Mark
MCQ
$\operatorname{cosec} 150^{\circ}=?$
  • A
    -2
  • B
    $-\sqrt{2}$
  • C
    2
  • D
    $\sqrt{2}$
✓

Answer

(c) 2E
Explanation: $\operatorname{cosec} 150^{\circ}=\operatorname{cosec}\left(180^{\circ}-30^{\circ}\right)=\operatorname{cosec} 30^{\circ}=2$

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