3 years ago

Help me plzzzz, trigonometry!! I'll give brainliest!!!

Mathematics

1 answer:

Naddika [18.5K]3 years ago

4 0

Answer:

Step-by-step explanation:

tan47=x/18

x=18tan47

cosCDB=7/x

cosCDB=7/(18tan47)

CDB=arccos(7/(18tan47))

CDB=68.74

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