Core stretch In triangle $PQR$, $PQ=12.5$ cm, $PR=18$ cm and $\angle PQR=40^\circ$. The perp

Question

Core stretch In triangle $PQR$, $PQ=12.5$ cm, $PR=18$ cm and $\angle PQR=40^\circ$. The perpendicular from $P$ meets $QR$ at $H$, which lies between $Q$ and $R$. $40^\circ$ $Q$ $H$ $R$ $P$ $12.5\text{ cm}$ $18\text{ cm}$ Diagram not drawn to scale. Give lengths and areas correct to 3 significant figures, and angles correct to 1 decimal place.

Accepted Answer

(a) $8.03$ cm (b) $26.5^\circ$ (c) $103\text{ cm}^2$

An oblique triangle from two sides and one angle

An oblique triangle from two sides and one angle

Solution:

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