Question

If ABC is a right angled triangle with B = 90° and if AB = 12 cm and AC = 13 em, find
BC.​

Answer 1

Answer:

5 cm

Step-by-step explanation:

side opposite 90⁰ is the hypotenuse... side opposite would be AC

by pythagoras theorem

12² + BC² = 13²

BC = root of 25

BC = 5cm

uoyu can also directly say the answer is 5 cm as 5,12 and 13 are pythagorean triplets

hopw it helps pls mark as brainliest

Answer 2

Hey mate ❤✌

_______________

Given :-

☆ ABC is a right angled triangle

☆ B = 90°

☆ AB = 12cm

☆ AC = 13cm

Hope you know pythagoras theorm

=> (Side 1)^2 + (Side 2)^2 = Hypotenuse^2

$= > ab ^{2} + bc ^{2} = ac^{2}$

Let's use the theorm to calculate BC

$= > 12 ^{2} + bc ^{2} = 13 ^{2}$

$= > bc ^{2} = 13 ^{2} - 12 ^{2}$

$= > bc ^{2} = 169 - 144$

$= > bc = \sqrt{25}$

☆ BC = 5cm

Hope you got it !

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Tʜᴀɴᴋʏᴏᴜ Dᴇᴀʀ ❤

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ᴅᴏ ᴍᴀʀᴋs ᴀs ʙʀᴀɪɴʟɪᴇsᴛ ✌