Question

12.) Refer to right triangle ACB. If m Ang A = 30° and BC = 5, what is the length of AB?
5 sqrt(2)
5
5 sqrt(3)
10

Answer 1

A
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C B

sin(30) = 5/ x
x = 5 / sin(30)
x = 2.5

Answer 2

2.5 doesn't match with any of the answers but thank you anyways.

Answer 3

A
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B C

tan(30) = 5/x
x = 5 / tan(30)
x = 5/ sqrt 3
still not the answer... T-T