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Q.

Under the rotation of axes through an angle 15° in anti clock wise sense the equation 3x+4y+15=0change to aX+bY+c=0 then |c|a2+b2=

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answer is 3.

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Detailed Solution

On rotation of axes the distance remains same

|c|a2+b2=|15|32+42=3

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Under the rotation of axes through an angle 15° in anti clock wise sense the equation 3x+4y+15=0change to aX+bY+c=0 then |c|a2+b2=