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kgarc1019
07.06.2021 •
Mathematics
Mike wants to work out the height of a tree which has a fence around it. From A he sees that the angle of elevation of the top is 19° From B, 18m closer, the angle of elevation is 32° Workout the height of the tree
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Ответ:
13.8 m
Step-by-step explanation:
Given
From point A, angle of elevation is![19^{\circ}](/tpl/images/1365/4160/755b6.png)
From point B which is 18 m closer, it changes to![32^{\circ}](/tpl/images/1365/4160/f5190.png)
Suppose the height of tree is h
From figure, we can write
Similarly
Deduce the value of h
Thus, the height of the tree is 13.8 m
Ответ:
(2,-3)
Rember the formula rule (x,y) (x,-y)
Step-by-step explanation: