semag
semag
29-12-2020
Mathematics
contestada
Find BC. PLEASEEE HELP
Respuesta :
jesusm1
jesusm1
29-12-2020
Answer:
Concept
:
Geometric
Identities
We want BC
We will use geometric identities to get our value
We have BA and AC and angle !A
Hence arccos(89)= 21/x
Hence X=25 km
B
Answer Link
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