The diagram shows a quadrilateral $$\(A B C D\)$$ made from two triangles, $$\(A B D\)$$ and $$\(B C D\)$$. Calculate angle $$\(C B D\)$$. Angle $$\(C B D=\)$$ ............................................
Exam No：0580_s21_qp_42 Year：2021 Question No：6(b)
Answer:
\(74.3\) or \(74.30\) to \(74.33\)
Knowledge points:
E4.7.4 angle properties of triangles and quadrilaterals
E6.4 Solve problems using sine and cosine rules and the area formula for triangles.
Solution:
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