iran-konkur 2016 Q165

iran-konkur · Other · konkur-riazi_1395_specialized Not Maths
165. In the figure below, if body $AB$ rotates $\text{A}$ degrees about point $A$, and on the same surface a mirror of size $25$ degrees is also placed, we rotate the mirror clockwise by $25$ degrees; by how many degrees does the angle between the body and its image in the mirror change?
[Figure: A mirror on a surface with angle $30°$ marked, and body $AB$]
  • [(1)] $35$
  • [(2)] $55$
  • [(3)] $60$
  • [(4)] $100$

\textbf{165.} In the figure below, if body $AB$ rotates $\text{A}$ degrees about point $A$, and on the same surface a mirror of size $25$ degrees is also placed, we rotate the mirror clockwise by $25$ degrees; by how many degrees does the angle between the body and its image in the mirror change?

\textit{[Figure: A mirror on a surface with angle $30°$ marked, and body $AB$]}

\begin{itemize}
    \item[(1)] $35$
    \item[(2)] $55$
    \item[(3)] $60$
    \item[(4)] $100$
\end{itemize}

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