Math, asked by jasviderkaur1972, 2 months ago

please answer this question step by step

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Answered by ExploringMathematics

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$\rm{70^\circ + 60^\circ+\angle{a}=180^\circ\quad...\:By\:Angle\:Sum\:Property}$

$\longrightarrow\rm{130^\circ+\angle{a}=180^\circ}\longrightarrow\rm{\angle{a}=180^\circ-130^\circ=50^\circ}$

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