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Question : 105 of 200
Marks:
+1 ,
-0
Solution:
‌ Let ‌ A ‌ = 2 − + , B = − 3 − 5 C ‌ = 3 − 4 − 4 A B = − − 2 − 6 , BC = 2 − + and
‌ ‌ C A = − + 3 + 5 ‌ a = | B C | = √ 4 + 1 + 1 = √ 6 ‌ b = | C A | = √ 1 + 9 + 25 = √ 35 ‌ c = | A B | = √ 1 + 4 + 36 = √ 41 Now,
c 2 = a 2 + b 2 ⇒ ‌ ‌ 41 ‌ = 6 + 35 ‌ = 41 = 41 ∴ It is right angled triangle
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