Question

ΔΒС Iៜ α τʀIαƞϑℓε, ʀIϑհτ-αƞϑℓεδ ατ С. Iẜ ΔΒ = 15 ϲʍ αƞδ ΔС = 12 ϲʍ, τհεƞ ΒС = ____ *

1 ⅊ɸIƞτ
9 ϲʍ
27 ϲʍ
81 ϲʍ
3 ϲʍ


chalte hai chugliyo me Yaad rakhna xD


Left~~~​

Answer 1

Answer:

Hey!! Ur answer:

$AB = 15 cm \: \: \\ AC= 12 cm \: \: \\ BC=x \\ {(15})^{2} = {(12})^{2} + {x}^{2} \: \: (pythagoras \\ \: theorem) \\ = > 225 = 144 + {x}^{2} \\ = > 255 - 144 = {x}^{2} \\ = > 81 = {x}^{2} \\ = > \sqrt{81} = x \\ = > 9 = x \\ \\ therefore \: \: BC=9 \: cm \:$

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