In triangle ABC, given a= 12 units, b= 22 units, c = 20 units. Determine angle B.
Question
Solution 1
To find angle B in triangle ABC, we can use the Law of Cosines. The Law of Cosines states that for any triangle with sides of lengths a, b, and c, and an angle γ opposite side c, the following relationship holds:
c² = a² + b² - 2ab*cos(γ)
We can rearrange this formula to solve for cos(γ):
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