Core stretch In a support frame, $A,B,C$ are collinear vertically and $B,E,D$ are collinear hori

Question

Core stretch In a support frame, $A,B,C$ are collinear vertically and $B,E,D$ are collinear horizontally. Segments $AD,AE,CD$ are braces. Given $BE=4$ m, $BC=9$ m, $AE=10$ m, and $\angle BDC=40^\circ$, find $4$ $BC=9$ $AE=10$ $A$ $B$ $C$ $E$ $D$ $40^\circ$ Give non-exact lengths and areas to 3 significant figures, and angles to 1 decimal place.

Accepted Answer

(a) $\sqrt{84}\approx9.17$ m (b) $10.7$ m (c) $25.9^\circ$.

A vertical-horizontal support frame

A vertical-horizontal support frame

Solution:

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