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How many triangles?

The number of non-congruent triangles \(ABC\) such that \(\angle A=25^{\circ}\), \(AB = 10\) and \(BC = \alpha\), where \(\alpha \in \mathbb{R}^{+}\) is:

  • exactly one

  • at most one

  • at most 2

  • none of the above.

Note by Paramjit Singh
3 years, 8 months ago

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