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The value of cosec 10^ - 3 10^ is equal to :

Options

  1. A8
  2. B6
  3. C2
  4. D4

Correct answer

D. 4

Step-by-step solution

cosec 10° - 3 10° = 10° - 3 10° 10° 10° . Numerator: 10° - 3 10° = 2 ( 1 2 10° - 3 2 10° ) = 2 70° = 2 20° . Denominator: 10° 10° = 1 2 20° . Result = 2 20° 1 2 20° = 4 .

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