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Question Number 135570 by bemath last updated on 14/Mar/21

Geometry

Geometry If the area of the triangle formed by the positive x-axis, the normal and the tangent to the circle (x-2) ² +(y-3) ² =25 at the point (5,7) is A, then 24A is equal to______?\n

Answered by EDWIN88 last updated on 14/Mar/21

Commented byEDWIN88 last updated on 14/Mar/21

 I guess the question area of triangle formed  by x−axis , tangent and normal line  tangent line : 3x+4y=43 ⇒ intersect the  x−axis at G(((43)/3) ,0 )  normal line : 4x−3y=−1 ⇒intersect the  x−axis at P(−(1/4),0) and intersect the y−axis  at R(0, (1/3)) .  the area of triangle is A=(1/2).7.(((43)/3)+(1/4))  A= (7/2).(((175)/(12)))= ((1125)/(24)). Therefore  24A = 1125

Iguessthequestionareaoftriangleformed byxaxis,tangentandnormalline tangentline:3x+4y=43intersectthe xaxisatG(433,0) normalline:4x3y=1intersectthe xaxisatP(14,0)andintersecttheyaxis atR(0,13). theareaoftriangleisA=12.7.(433+14) A=72.(17512)=112524.Therefore 24A=1125

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