3 years ago

A, B & C form a triangle where Z BAC = 90°.

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

8 0

Answer:

BC ≈ 8.6

Step-by-step explanation:

Using Pythagoras' identity in the right triangle , that is

BC² = AB² + AC² = 7.3² + 4.6² = 53.29 + 21.16 = 74.45 ( square root both sides )

BC = $\sqrt{74.45}$ ≈ 8.6 ( to 1 dec. place )

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