5. In the adjacent triangle ABC, find x+1Sthe value of x and calculate

1.	5. In the adjacent triangle ABC, find x+1Sthe value of x and calculate themeasure of all the angles of thetrianglex-15x+30
Answer» Sum of angles in triangle is 180°So,x + 15 + x - 15 + x + 30 = 180° 3x + 30 = 180° 3x = 180° - 30° = 150° x = 150°/3 = 50° Angles arex + 15 = 50 + 15 = 65° x - 15 = 50 - 15 = 35° x + 30° = 80°

5. In the adjacent triangle ABC, find x+1Sthe value of x and calculate themeasure of all the angles of thetrianglex-15x+30

Answer»

Sum of angles in triangle is 180°So,x + 15 + x - 15 + x + 30 = 180°

3x + 30 = 180°

3x = 180° - 30° = 150°

x = 150°/3 = 50°

Angles arex + 15 = 50 + 15 = 65°

x - 15 = 50 - 15 = 35°

x + 30° = 80°