The two sides of the triangle are equal to 2 roots of 3 dm and 4 dm and the angle between them is 30 degrees find the third side
| February 22, 2021 | education
Determine the length of the side AB by the cosine theorem for triangles.
AB ^ 2 = AC ^ 2 + BC ^ 2 – 2 * AC * BC * Cos30 = 16 + 12 – 2 * 4 * 2 * √3 * √3 / 2 = 28 – 24 = 4.
AB = 2 dm.
Answer: The length of the AB side is 2 dm.
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