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AP EAMCET202021 Sep 2020Evening ShiftMathematicsTrigonometric Ratios & IdentitiesActual

Find the value of ( cosec 750^ -2 ( 765^ ) )

Options

  1. A0
  2. B1
  3. C2
  4. D-1

Correct answer

A. 0

Step-by-step solution

( cosec 750^ -2 765^ ) ( aligned & = cosec (720^ +30^ )-2 (720^ +45^ ) & = cosec 30^ -2 45^ =2-(2 1)=2-2=0 aligned ) Hence, option (a) is correct.

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