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Ede4ka [16]
4 years ago
8

With reference to the diagram, what is cosA?

Mathematics
2 answers:
erica [24]4 years ago
8 0
Cos A = Ad / AB 
tan 26.57 = AB / 17.89
so AB = 17.89 * tan 26.57 = 8.9469
By pythagoras 
Bd = sqrt ( 17.89^2 - 16^2) =  8
AD =  sqrt (8.9469^2 - 8^2) =  4.006

cos A =  4.006/  8.9469 = 0.447
ICE Princess25 [194]4 years ago
5 0
Hello there.

<span>With reference to the diagram, what is cosA?

</span><span>B.0.447</span>
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10.7K viewsView upvotes

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