Problem

$O31$ One sees the top of a tree on the bank of a river at an elevation of $70^{°}$ from the other bank. Stepping $20$ metres back, he
sees the top of the tree at an elevation of $55^{°}.$ Height of the person is $1.4$ metres.
$\left(a\right)$ Draw a rough figure and mark the measurements.
(b) $\right)$ Find the height of the tree.
$\left(c\right)$ Find the width of the river.
$\left(tan70^{9}$ $=2.75:tan55^{°}$ $=1.431$
$+40$ $0$ $1$ $=$

10th-13th grade

Trigonometry

Search count: 105

Solution

Qanda teacher - srikanthv

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$1.5m$ tall Manu is standing at the edge of a river sees the top of
the tree on the opposite edge at an elevation $30^{9}$ Stepping
$back50m$ ,he sees its top at an elevation $15^{0}$ 15°.Find the height of
tree and width of the river.

10th-13th grade

Trigonometry