Right Angle Triangle | SAT Geometry

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Triangle ABC below is a right angle, and sin⁡(𝐵)=5/13. What is the length of side (𝐵𝐶) ̅?
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sin(B) = 5/13
This would mean the hypotenuse was 13, but it's not. That means this is simplified. We see that 13 is half of 26, so multiply by two.


5/13 = 10/26
b = 10
a = √(26²-10²)
a = √(676-100)
a = √576
a = 24
BC = 24

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