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Help pls i don’t understand this cause my teacher can’t teach

Help pls i don’t understand this cause my teacher can’t teach-example-1
User Twaggs
by
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1 Answer

4 votes

Answer:

A

Explanation:

cos A =
(adjacent)/(hypotenuse) =
(AB)/(AC) =
(18)/(30) =
(3)/(5)

User Muhammedv
by
7.6k points