Respuesta :
By help of trigonometric table, we find that the measure of the angle formed by the ladder and the level ground is 66.92° and the distance between the foot of the ladder and the foot of the building under OSHA's standard is 2.588 feet.
What is trigonometric table ?
Trigonometric table helps to find the values of trigonometric standard angles such as 0°, 30°, 45°, 60° and 90°.
The ladder placed against the side of the house makes a right angle triangle with the ladder being the hypotenuse and wall being perpendicular.
Perpendicular =9.2 feet
Hypotenuse = 10 feet
Angle formed by the ladder and the level ground = sinα = perpendicular/ Hypotenuse = 9.2/10
sinα = 0.92
α = 66.92°
If the angle between the ladder and foot of the building is 75°.
Let distance between the foot of the ladder and the foot of the building = x
cos75 = x/10
0.2588*10 = x
x = 2.588 feet
Learn more about trigonometric table here
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