three angles of triangle are x-10°,x+20°,2x-30° find each angles?
Answers
Answered by
10
Step-by-step explanation:
wkt
sum of angles in a triangle is 180 degrees
x-10+x+20+2x-30=180
4x-20= 180
4x= 180+20
4x= 200
x=200/4
x=50
angles are
x-10= 50-10= 40 degrees
x+20=50+20=70 degrees
2x-30=2(50)-30=100-30=70 degrees
angles are 40 degrees, 70 degrees and 70 degrees
Answered by
1
Answer:
Angles 40°, 70°, 70°...
Step-by-step explanation:
- We know that sum of angles in a triangle is 180° • x–10+x+20+2x–30=180° •4x–20=180 •4x=180+20 •x=200/4 •x=50 angles are
- x–10=50–10=40°
- x+20=50+20=70°
- 2x–30=2(50)–30=100–30=70°
- Angles are 40degrees,70degrees,70degrees
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