three angles of triangle are given (x-40°),(x-20°)(1/2x-20°).find the value of x
Answers
Answered by
0
Answer:
sum of these 3 is 180 degrees so x-40+x-20+1/2x-20=180
2x + 1/2x = 260
so 4x^2+1/(2x)= 260
so 4x^2-260x+1= 0
so answer is 65(64.99) and pls mark brainliest
Step-by-step explanation:
Answered by
2
Answer:
Step-by-step explanation:
by ,the sum of all angles of triangle
= (x+40) + (x-20) + (1/2x-20)=180
= x+40 + x-20 + 1/2x-20 = 180
=(x+x+x/2) - (40+20+20) =180
= (x+x+x/2) -80=180
= 5x/2 = 180+80
= 5x/2=250
= 5x= 250*2
= 5x = 500
= x=500/5
=x = 100
Similar questions