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1. In a triangle, β = 106°, b = 20, a = 25. Find the angle...

1. In a triangle, β = 106°, b = 20, a = 25. Find the angle α.

2. If v = 5i - j and w = 2i - j, find ||v+w|| .

3.In the given triangle, find the side b. β = 35°, c= 10, a = 4

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