Question

An incline palne is 20 metre long and it makes an angle 60° to horizontal. A man climbs to the top of the incline. Find to ehat height the man reaches from the ground.​

Answer 1

Answer:

4 metre

Step-by-step explanation:

Right triangles with 30-60-90 angles will have their ratio of the sides as 1:√3:2.

Let the smallest side of the formed right angled triangle be x. (horizontal)

x^2 + (2x)^2 = 20   [ Pythagorean theorem]

=> 5*x*x = 20

=> x^2 = 4

=> x = 2

HYPOTENUSE=20 M , BASE = 2 M , HEIGHT = 4 M

Answer 2

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