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Year 11 (2025) Maths Advanced Trigonometry

Ambiguous Case

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Questions
Question 1
12879

In \(\triangle ABC\), \(AB=5\), \(AC=8\) and \(\angle ACB=20^\circ\). Find the possible size(s) of \(\angle ABC\), correct to the nearest minute.

\(\angle ABC=33^\circ 11'\) or \(146^\circ 49'\)

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