In triangle ABC AB = 2cm AC = 8cm cos A = 1/8 find BC.
| February 9, 2021 | education
If you know the two sides of the triangle and the angle between them, then you can find the third side.
The formula and solution are given in the link. Since the formula contains cos a, and by the condition of the problem, cos a = 1/8, then we substitute this value into the formula.
Answer: BC = 8 cm.
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