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Please help, I dont know what formula to use. BC=?
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13 votes
Please help, I dont know what formula to use. BC=?

Please help, I dont know what formula to use. BC=?-example-1
User Akash Karothiya
by
7.3k points

1 Answer

8 votes

Answer:

17

Explanation:

Note angle B = 180 - 51 - 39 = 90°

Use sin(39) = BC/27

OR cos(51) = BC/27

Get BC = 17

User Ftravers
by
7.1k points
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