waecmaths question:
Find the value of m in the diagram
Option A:
34o
Option B:
B. 27o
Option C:
23o
Option D:
17o
waecmaths solution:
\[\begin{align} & \angle BCG=\angle ABH=7m \\ & \angle DCG=\angle EDF=2m \\ & \angle BCD=\angle BCG+\angle DCG={{153}^{\circ }} \\ & {{153}^{\circ }}=7m+2m \\ & m=\frac{{{153}^{\circ }}}{9}={{17}^{\circ }} \\\end{align}\]