Angles'a'and 'b'form a linear pair of angles and a -2b=30°,find the value of 'a'.
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a+b=180°........... (1)
a-2b=30°........... (2)
(1)-(2)
=> 3b=150°
b=150°/3
=50°
then the value of a=180°-50°=130°
a-2b=30°........... (2)
(1)-(2)
=> 3b=150°
b=150°/3
=50°
then the value of a=180°-50°=130°
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