Let us assume that PQ is the cliff and angle of elevation from R to the cliff is
.
In ΔPQR,
![\[\tan \theta =\frac{PQ}{QR}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-5c0148932950e52a5a022a552ca3ddb2_l3.png "Rendered by QuickLaTeX.com")
![\[\tan {{60}^{\circ }}=\frac{PQ}{30}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-3e4cd924e0cea10a70334d9470c9dae1_l3.png "Rendered by QuickLaTeX.com")
![\[\sqrt{3}=\frac{PQ}{30}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-50eab120b9b477b69de95fbb6a0227ba_l3.png "Rendered by QuickLaTeX.com")
![\[PQ=30\sqrt{3}m\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-dd14af743ee753c9e3af31ec82080262_l3.png "Rendered by QuickLaTeX.com")
![\[30\sqrt{3}m\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-92d6c68de8c5556fc5e9a12008680668_l3.png "Rendered by QuickLaTeX.com")
2. The angle of elevation of the top of a vertical cliff from a point . Find the height of the cliff.
![\[30m\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-1fdc10a5faa9e1d42c2f2b00747bfc8e_l3.png "Rendered by QuickLaTeX.com")
. Find the height of the cliff.