EM-1341

Area of a triangle (½ab sin C)

E Math · Secondary 3 · Hard · Area of a triangle (½ab sin C)

\triangle PQR

\angle P = 72^\circ

\angle Q = 48^\circ

and side

PR = 14\text{ cm}

. Using the formula

\text{Area} = \tfrac12 ab\sin C

, find the area of the triangle.

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