Question

10. A ladder 20 mts. leaning to the wall at height of
10 m. Then the angle made by it horizontally is
1. 30° 2. 60° 3. 45° 4. 75°
​

Answer 1

Answer:

1. 30°

Step-by-step explanation:

sin theta = perpendicular / hypotenuse

sin theta= 10/20

sin theta=1/2

sin theta=sin 30°

theta=30°

Answer 2

Answer:

we have the hypotenuse (20) and the perpendicular (10), so we will use sin ratio

let the angle be x. so,

sin x = perp./ hypo.

sin x = 10/20

sin x. = 1/2

and we know that sin 30° is 1/2

so angles is 30°

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