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Sagot :
Answer:
A = 99, B = 33, C = 48
Step-by-step explanation:
A = 3B
B + 15 = C
A+B+C = 180
3B + B + B + 15 = 180
5B = 165
B = 33
Answer:
33°, 48°, 99°
Step-by-step explanation:
let the smallest angle be x then the other 2 angles are 3x and x + 15
The sum of the 3 angles in a triangle = 180°
Sum the 3 angles and equate to 180
x + 3x + x + 15 = 180 , that is
5x + 15 = 180 ( subtract 15 from both sides )
5x = 165 ( divide both sides by 5 )
x = 33
x + 15 = 33 + 15 = 48
3x = 3 × 33 = 99
The 3 angles are 33°, 48°, 99°
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