Question

Triangle 1st angle half of 2nd angle 2nd angle is two-third of 3rd angle.Value of first angle

Answer 1

Answer:

30°

Step-by-step explanation:

let the third angle is 3X

so second angle will be 2X

{two-third of 3rd angle = 2/3(3X)}

then first angle will be X

{half of second angle =1/2(2X)}

in triangle

sum of angle = 180°

so, 3X + 2X +X = 180°

6X = 180°

X =30°

first angle is {X(let)} 30°