Question

Find the value of a,b,c of the following ​

Answer 1

Answer:

a= 20°

b = 130°

c = 50°

Step-by-step explanation:

In triangle ABC

angle A + Angle b + angle C = 180° by angle sum property of a triangle.

(30+60)° + angle b (a) + 70° = 180°

160° + a = 180°

a = 180°-160°

a = 20°

In triangle ABD

sum of all angles is 180° by angle sum property of a triangle

a + b + A = 180°

20° + b + 30° = 180°

50°+b= 180°

b = 180°-50°

b = 130°

In triangle ADC

angle A + angle c + Angle D = 180° by angle sum property of a triangle

60°+70°+c = 180°

130° + c = 180°

c = 180° - 130°

c = 50°

Answer 2

Step-by-step explanation:

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