Trigonometry Question
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Grade 11 Trigonometry CCSS: HSF-TF.A.3
In isosceles triangle ABC with AB = AC, cos(C) = [math]1/2[/math]. If the height from A to BC is 9 units, what is the length of AB?
- 18 units
- 9√3 units
- 6√3 units
- 12 units
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