Question

in triangle abc angle A equal to 2 X + 15 degrees Angle B equal to X degrees and angle c equal to 3 x minus 15 degrees value of angle C is

Answer 1

In a triangle, sum of all angles = 180°

=> angle A + angle B + angle C = 180°

Here, given that angle A = 2x + 15
angle B = x
angle C = 3x - 15

So,

2x + 15 + x + 3x - 15 = 180°

=> 6x = 180°

=> x = 180/6

=> x = 30°

Now angle C = 3x - 15

=> angle C = 3(30) - 15

=> angle C = 90 - 15

=> angle C = 75°

Hence your answer is 75°

Answer 2

2x+15+x+3x-15=180
6x=180
x=180/6
x=30

for angle c
C=3x-15
C=3*30-15
C=90-15
C=75
the angle of C is 75