Solve for w, b, and r using the proportions from part A. Show your work.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

m∠a is 90°

m∠b is 40°

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