the angles of a triangle are (x-30°),(2x+15°) and(x/2+120°). find the angles
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Heya☺
As you know that the sum of all angle of a triangle is 180°
,so, when adding it's three angle.=180°
=)x-30°+2x+15°+x/2+120°=180°
=)3x+x/2+105°=180°
=)6x+x+210°/2=180°
=)6x+x+210°=360°
=)7x=360°-210°
=)7x=150°
=)x=21.4285
putting the value of x on each equation..
1st angle ,x-30°
=21.4285°-30
=-8.5714
2nd angle ..
2*21.4285+15°
=)42.85+15°
=)57.85
and third angle
x+120°
=)21.4285/2+120°
=)10.7142+120
=)130.7142
Hope it help you.
@rajukumar☺ .
As you know that the sum of all angle of a triangle is 180°
,so, when adding it's three angle.=180°
=)x-30°+2x+15°+x/2+120°=180°
=)3x+x/2+105°=180°
=)6x+x+210°/2=180°
=)6x+x+210°=360°
=)7x=360°-210°
=)7x=150°
=)x=21.4285
putting the value of x on each equation..
1st angle ,x-30°
=21.4285°-30
=-8.5714
2nd angle ..
2*21.4285+15°
=)42.85+15°
=)57.85
and third angle
x+120°
=)21.4285/2+120°
=)10.7142+120
=)130.7142
Hope it help you.
@rajukumar☺ .
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