Question

in triangle ABC angle b is three times angle c and angle a is 100 degree find angle b and angle c​

Answer 1

Answer:

b = 60° & c = 20°

Step-by-step explanation:

a = 100°

b= 3c....(1)

sum of all angles in triangles = 180°

180 - 100(angle a )=80°

angle b+ c = 80°

3c + c = 80° ... from (1)

4c=80

c=80/4

C=20

we know that , b= 3c

b=3×20

b=60

measure of angle c= 20°& b= 60°