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Three angles of triangle are given (x-40°),(x-20°)(1/2x-20°).find the value of x |
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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: |
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