Question

A 20m long stair standing against a wall makes on angle of elevation of 30. Find the hight of the wall

Answer 1

Step-by-step explanation:

hypotenuse=20m

angle of elevation=30°

let the height of the wall be x

according to questions

to find the height of the wall

sin A= perpendicular/hypotenuse

sin30°= X/20

=1/2=x/20

X=20/2=10m

hence, the height of the wall is 10m.

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Answer 2

Answer:

hope this answer useful to you mate