Question

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Answer 1

Answer:

sum of angle of triangle=180°

A+B+C=180°

60°+7X+5X=180°

60°+12X=180°

12X=180°-60°

12X=120°

X=10°

B= 7x

B=7×10°

B=70°

C= 5x

C= 5×10°

C= 50°

Step-by-step explanation:

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Answer 2

Answer:

x = 10 degrees

Step-by-step explanation:

we know that A+B+C = 180

so 7x+5x+60 = 180

12x = 180-60

12x = 120

x = 10 degrees