the angles of a triangle are (x-40), (x+20),(1 and a half x). find the value of x
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Step-by-step explanation:
as we know sum of interior angles of a triangle=180
therefore,
1 and a half x=3/2,
- (x+40)+(x+20)+(3/2x)=180
- 7/2x+60=180
- 7/2x=180-60
- 7/2x=120
- 7x=120×2
- 7x=240
- x=240/7
- x≈34.28
the answer above is approximate
hope it helps
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