Question

A ladder 28m long is leaned against a wall. The distance between the foot of the ladder to the base of the wall is 14m find the angle made by the laser with the ground​

Answer 1

Answer: As wall is always perpendicular so

In the triangle by Pythagoras theorem

(wall length)square + (length between the wall and the foot of ladder) square =(length of ladder) square

4.8 square ​+ length between the wall and the foot of the wall square = 6 square

23.04+length between wall and ladder square = 36

Length square = 36 - 23.04

Length = under root 12.96

Length = 3.6m

Step-by-step explanation:

Answer 2

Answer:

30°

Step-by-step explanation:

The base of the triangle is 14m

The hypotenuse is 28m

Now,

$\cos( \alpha ) = \frac{base}{hypotenuse}$

$\cos( \alpha ) = \frac{14}{28}$

$\cos( \alpha ) = \frac{1}{2}$

Therefore angle will 30°.

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