Question

please answer this question ⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️
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Answer 1

Answer:

in the figure given below find angle abd also find angle abc if angle c = 3 angle abc =2 ( angle a + angle b )

given ,

< c =3 < b = 2 ( < a + < b ).....1

let < a = x

< b = y

< c = 3 < b = 3y

from (1) let as consider first and last term < c = 2 ( < a + < b )

2 < a + 2 < b - < c = 0 .......(a)

as we know that , the sum of interior angle of a triangle is 180 , we have

< a + < b + < c = 180 ......(b)

< c = 120°

< c = 3 < b = < b = < c / 3 = 120/3

< b = 40°

< a + < b + < c = 180°= < a + 40° + 120° =180° = < a + 160° = 180° = < a = 180° - 160°

< A = 20 °