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In a right-angled triangle ABC, right angled at B, AB =х2BC = x + 2 and AC = x + 3. Findvalue of x. |
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Answer» Step-by-step explanation: Given : A triangle right angled at B. AB=x−3,BC=x+4,AC=x+6 Thus, AC 2 =AB 2 +BC 2 (x+6) 2 =(x−3) 2 +(x+4) 2
x 2 +12x+36=x 2 −6x+9+x 2 +8x+16 x 2 −10x−11=0 x 2 −11x+x−11=0 x(x−11)+1(x−11)=0 (x+1)(x−11)=0 x=11,−1 Neglecting the negative value, x=11 thus, AB=8 cm, AC=17 cm and BC=15 cm |
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