PLEASE HELP WILL MARK BRAINLIEST!!!

Mathematics

1 answer:

Ann [662]3 years ago

3 0

Answer:

3√2/2 in or 2.12 in

Step-by-step explanation:

<u>CD is angle bisector of angle ACB:</u>
∠BCD = ∠ACD = 90°/2 = 45°
∠CBD = 45° as ∠CDB = 90°
CD = BD as triangle CDB is isosceles right triangle
BC = CD√2 as per property of 45° right triangle
CD = BC/√2 = 3/√2 = 3√2/2 = 2.12 in

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