A) \[45{}^\circ \]
B) \[125{}^\circ \]
C) \[90{}^\circ \]
D) \[80{}^\circ \]
Correct Answer: B
Solution :
(b): Draw \[{{t}_{3}}||{{t}_{1}}\] from point 'R' Construct a line \[{{t}_{3}}\] through R and parallel to \[{{t}_{1}}\] & \[{{t}_{2}}\]. \[\Rightarrow \,\,\,a+b=y\] and \[a=45{}^\circ \] (Corresponding angles) \[b=180{}^\circ -100{}^\circ =80{}^\circ \] (Angles on the same side of transversal.) \[\Rightarrow \,\,y=a+b=45{}^\circ +80{}^\circ =125{}^\circ \]You need to login to perform this action.
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