Question

triangle ABC ∆A=2x+115 ∆B=x+10 ∆C=3x+5
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Answer 1

Answer:

$< a + < b + < c - - 180......(sum \: of \: all \: angles \: of \: the \: triangle \: is \: 180) \\ (2x + 115) + (x + 10) + (3x + 5) - - 180 \\ 2x + 115 + x + 10 + 3x + 5 - - 180 \\ 6x + 130 - - 180 \\ 6x - - 180 - 130 \\ 6x - - 50 \\ x - - \binom{50}{6} \\ x - - 8.3 \\ \\ \\ 2x + 115 - - 2 \times (8.5) + 115 \\ - - 17 + 115 \\- - 132 \\ \\ x + 10 - - 8.5 + 10 \\ - - 18.5 \\ \\ 3x + 15 - - 3 \times (8.5) + 15 \\ - - 25.5 + 15 \\ - - 40.5$

<a= 132degree

<b = 18.5 degree

<c = 40.5 degree