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MHT CET202013 Oct 2020Evening ShiftMathematicsStraight LinesActual

The cartesian co-ordinates of the point whose polar co-ordinates are ( 1 2 , 120^ ) are

Options

  1. A( 1 4 , - 3 4 )
  2. B( 1 4 , 3 4 )
  3. C( -1 4 , - 3 4 )
  4. D( -1 4 , 3 4 )

Correct answer

D. ( -1 4 , 3 4 )

Step-by-step solution

Given P ( r , )= ( 1 2 , 120^ ) r = 1 2 , =120^ We have x = r = 1 2 120^ = 1 2 (- 1 2 ) x =- 1 4 and y=r = 1 2 120^ = 1 2 ( 3 2 )= 3 4 Required point is P (- 1 4 , 3 4 )

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