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The angle between the lines r left square bracket 2 C o s space theta plus 5 S i n space theta right square bracket equals 3 and r left square bracket 2 s i n space theta minus 5 C o s space theta right square bracket plus 4 equals 0 is

Maths-General

  1. 30 to the power of ring operator end exponent    
  2. 45 to the power of ring operator end exponent    
  3. 60 to the power of ring operator end exponent    
  4. 90 to the power of ring operator end exponent    

    Answer:The correct answer is: 90 to the power of ring operator end exponent

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