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Year 11 (2026) Maths Advanced (2026) Trigonometry

Ambiguous Case

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Question 1
12879

In \(\Delta  ABC ,AB = 5 ,AC = 8\) and \(\angle {\rm{ACB}}\) = \({\rm{20}}^\circ \). Find the size(s) of \(\angle {\rm{ABC}}\)

\(33^\circ {\rm{ 11' or 146}}^\circ {\rm{ 49' }}\)

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