The normal form of the line whose perpendicular from the origin has length 3 and makes an angle of 45^circ with the x-axis is:

  1. xsin 45^circ + ycos 45^circ = 3
  2. xcos 45^circ + ysin 45^circ = 3
  3. xcos 45^circ + ysin 45^circ = 9
  4. xcos 45^circ - ysin 45^circ = 3
Answer

B) xcos 45^circ + ysin 45^circ = 3

Normal form: xcosalpha + ysinalpha = p. Here this is x ( 1 2 ) + y ( 1 2 ) = 3. SLO M-09-B-08 · Understanding

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