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If ΔABC is a right angled triangle with ∠ABC = 90º, and AC = 10 cm, BC = 8 cm, then length of AB is:1. 12 cm2. 6 cm3. 2 cm4. 18 cm |
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Answer» Correct Answer - Option 2 : 6 cm Given: In ΔABC ∠ABC = 90º AC = 10 cm BC = 8 cm Formula Used: Pythagoras therom AC2 = AB2 + BC2 Calculation: Using pythagoras therom 102 = AB2 + 82 100 - 64 = AB2 AB2 = 36 AB = 6 cm ∴ The length of AB is 6 cm |
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