Question

in triangle abc, ange a is 90, find bc when ab is 5.6cm and ac is 4.2cm

Answer 1

Given

• A ΔABC, ∠A = 90°
• AB = 5.6 cm
• AC = 4.2 cm

To find

• BC = ? cm

Solution

• In ΔABC, ∠A = 90°
• BC² = AB² + AC²
• BC² = 5.6² + 4.2²
• BC² = 31.36 + 17.64
• BC² = 49
• BC = √49
• BC = 7

☯ Length of AB = 7 cm

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• https://brainly.in/question/34864718