Answer: the answer is 33
51 2/3+38 2/3
90 11/3
a - (180 -a) = 30 -> 2a -180 = 30 -> a = 105° and therfore b= 75°
Actually Welcome to the Concept of the plots and graphs.
Since, the x axis varies from -infinite to +infinite,
here, the y totally varies from -5 to +5,
hence, the option B.) is correct.
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