1) A bridge is to be built across a lake, from point B to point C in the figure shown. The bearing from B to C is S 41° W. From point A, the bearing to B is S 74º E and the bearing to Cis S 28°
E. Point A is 100 yards from B. Find the distance from B to C.

6 meters

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

replication and blocking

step-by-step explanation:

the answer is  

a.

4,624π mm2

step-by-step explanation: