The answer is 27.1 decimeters How? Please show me is Exercise b, that is, a 15 g

Question

The answer is 27.1 decimeters
How? Please show me is Exercise b, that is, a 15 g. Find the area of the triangle in (a) Find the area of the triangle in Exercise d, that is, 22012 h. The measure of an angle of elevation form a surveyor's position, ig the height, the top of the hill is 37 24 top of the hill is 27s metes above line through the surveyor's position. How far is the s directly below top of the hill? a 24-foot wall. If the ladder ex J. A 40-foot ladder is used to reach the top of the ladder feet past the top of the wall, find the measure of the angle that the horizontal ground. forms wit k. A 30 decimeters long is leaning against the side of a building. If the ladder how far up from the makes an angle 18' with the side of the building, does the ladder touch the building?

Explanation / Answer

k) We given a ladder 30 decimeters long and let the building height from the ground is h and ladder makes an angle 25018' with the side of the building

if we draw picture it forms the right triangle with hypotenuse =30 decimeters and adjacent side =h

and opposite side =x

cos(theta)=adjacent side/hypotenuse

cos(25018') = h/30

h=30*cos(25018') =27.1 decimeters

the ladder touch the building from ground is 27.1 decimeters

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