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tensa zangetsu [6.8K]
3 years ago
6

Ab= 6cm Ac=12cm Calculate the length of Ad Give your answer to 3 significant figures

Mathematics
1 answer:
Allisa [31]3 years ago
8 0

Answer:

12.686cm

Step-by-step explanation:

By using pythagoras, we can find CB.

We know that a^2+b^2=c^2

Therefore, 12^2-6^2=CB^2

CB=\sqrt{108} (it has to be positive since it is distance)

now we look at triangle BCD and use SOH CAH TOA.

Sin55=CB/CD\\Therefore, CD= 12.686

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