A man standing on the bank of a river observes that the angle of elevation of a tree on the opposite bank is same as the angle of depression from the tree to the man if the height of tree is $200 m$ find the width of the river .

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Solution

$θ = 45^{o}$
$\Rightarrow r = 200$ m.

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A man standing on the bank of a river observes that the angle of elevation of the top of a tree just on the opposite bank is $60^{\circ}$ . If the angle of elevation is $30^{\circ}$ from a point at a distance 'y' metres from the bank, then the height of the tree = ___ m.

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A man standing on the bank of a river observes that the angle of elevation of a tree on the opposite bank is same as the angle of depression from the tree to the man if the height of tree is 200m find the width of the river .

θ=45o⇒r=200m.

A man standing on the bank of a river observes that the angle of elevation of a tree on the opposite bank is same as the angle of depression from the tree to the man if the height of tree is $200 m$ find the width of the river .

$θ = 45^{o}$
$\Rightarrow r = 200$ m.