2. A helicopter (H) is hovering over a landing pad (P) 100m from
where you are standing (G). The helicopter's angle of elevation
with the ground is 12". What is the altitude of the helicopter?

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Ответ:

DBE12

21.08.2020

Mathematics

Step-by-step explanation:

Using Pythagoras Theorem, hypotenuse = 5

$h = \sqrt{a^{2}+ b^{2}$

$h = \sqrt{9+16 }\ = \sqrt{25}\ = 5$

sin x = height / hypotenuse = 3 / 5

cos y = base / hypotenuse = 3 / 5

sin x = cos y = 3 / 5

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2. A helicopter (H) is hovering over a landing pad (P) 100m from where you are standing (G). The helicopter's angle of elevation with the ground is 12". What is the altitude of the helicopter?