​Sir when we are constructing a triangle where base , base angle and difference b/w two sides is given, how to identify the construction whether adjacent side is greater or opposite side sir? Plzz Help me sir

Dear Student,

In this case you have to construct two triangles by considering both the possibilities i.e.,  

$$\begin{gathered} In a △ABC, suppose BC is the base \\ \mathit{C}\mathit{a}\mathit{s}\mathit{e}\mathbf{ }\mathbf{1}\mathbf{:}\hspace{0.17em}When AB > AC and AB - AC = d cm \\ \mathit{C}\mathit{a}\mathit{s}\mathit{e}\mathbf{ }\mathbf{2}\mathbf{:} When AB < AC and AC - AB = d cm \end{gathered}$$

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