Question

In the given figure, AOB is a straight line. Find the measure of 3a + b.

plz give the correct answer...

Answer 1

Step-by-step explanation:

180 ° IS THE ANGLE WHEN TWO LINES MEET AT A POINT PERPENDICULARLY LIKE AO AND BO. ADDING AO AND BO IS EQUAL TO 180°. THEN WE SEE DO AND CO INTERSECT AB AND ANGLE BETWEEN DO AND CO IS 90° WHICH FORMS HALF OF 180° .THE OTHER HALF IS a+2b and 2a-b .adding them we prove 3a+b=90° ATQ