roberthagemanjr roberthagemanjr

23-12-2019
Mathematics

contestada

Find the length of BC.

Find the length of BC class=

Respuesta :

Stefanisaska Stefanisaska

24-12-2019

Answer: 10.25

Step-by-step explanation:

Use Pythagoras equation:

AB=√AD²+BD²

AB=√5²+4²

AB=√25+16

AB=√41

cos∡ABC=AB/BC=BD/AB

AB/BC=BD/AB

AB²=BC*BD

(√41)²=BC*4

41/4=BC

BC=10.25

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