Math, asked by ak5173795, 11 months ago

In a A ABC, if 3 ZA = 4ZB = 6 ZC, calculate the angles.​

Answers

Answered by 2005saumyasingh
10

Answer:

Step-by-step explanation:

Given:

           ABC is a triangle.

           3∠a=4∠b=6∠c

to find:    ∠a

               ∠b

               ∠c

find:   ∠a+∠b+∠c=180°  (sum of all angles of triangle) ------(i)

         3∠a =4∠b

         3∠a= 4∠b

          3∠a/4 = ∠b     ------(ii)

          3∠a=6∠c

          3∠a/6= ∠c

           ∠a/2=∠c        ------(iii)

  from (i).....

             ∠a+∠b+∠c=180°

             ∠a+3∠a/4 +∠a/2 =180°

            (4∠a+3∠a+2∠a)/4 = 180°

            9∠a=180 ×4

            ∠a = 180×4/9

            ∠a = 80°

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