Question

find the value of x and find all the angle of the triangle shown below​

Answer 1

Answer:

Let,(3x+10)+(5x-9)+180°-(x+50)=180°

=>3x+5x+10-9+180-x-50=180°

=>8x-x+10-9+180°-50=180°

=>7x+10+180-9-50=180°

=>7x+190-59=180°

=>7x+131=180°

=>7x=180-131

=>7x=49

=>x=49/7

=>x=7

so 1st angle=>3x+10

3×7+10=21+10=31°

2nd angle=>5x-9

5×7-9=35-9=26°

3rd angle=>180-x-50

180-7-50=180-57=123°