Hello!Even though the question on the wall is not entirely triangulation related, you need to understand the basic concepts of trigonometrical properties before you can actually carry out triangulation. So here is the working!
tan 71= x/100
x=295
See?Simple right!Taking the wall to be x, we take tangent(which is opposite over adjacent), and by estimation, we estimated the angle to be 71 degrees, hence tan 71, which will give us the answer x.
Thank you!:D
The Awesome Triangles 123
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