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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ९

Show that the following points taken in order to form an isosceles triangle A(6, −4), B(−2, −4), C(2, 10) - Mathematics

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प्रश्न

Show that the following points taken in order to form an isosceles triangle

A(6, −4), B(−2, −4), C(2, 10)

बेरीज

उत्तर


Distance = `sqrt((x_2 - x_1)^2 + (y_2 - y_1)^2`

AB = `sqrt((-2 - 6)^2 + (-4 + 4)^2`

= `sqrt((-8)^2 + 0)`

= `sqrt(64)`

= 8

BC = `sqrt((2 + 2)^2 + (10 + 4)^2`

= `sqrt((4)^2 + (14)^2`

= `sqrt(16 + 196)`

= `sqrt(212)`

AC = `sqrt((2 - 6)^2 + (10 + 4)^2`

= `sqrt((- 4)^2 + (14)^2`

= `sqrt(16 + 196)`

= `sqrt(212)`

BC = AC = `sqrt(212)`  ...(Two sides are equal)

∴ ABC is an isosceles triangle.

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Co-ordinates of Points and Distance
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Coordinate Geometry - Exercise 5.2 [पृष्ठ २०२]

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सामाचीर कलवी Mathematics [English] Class 9 TN Board
पाठ 5 Coordinate Geometry
Exercise 5.2 | Q 3. (ii) | पृष्ठ २०२
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