Saved Bookmarks
| 1. |
यदि एक त्रिभुज के तीनो कोण `(x+15)^(@)` और `(2x)/3+30^(@)` तो त्रिभुज क्या हे।A. isoscelesB. equilateralC. right angledD. scalene |
|
Answer» Correct Answer - B According to question, `rArr (x+15^(@))+((6x)/5+6)^(@)+((2x)/3+30)^(@)` `=180^(@)` `angleA + angleB + angleC=180^(@)` `rArr x+(6x)/5+(2x)/3=180^(@)-(15+6+30)` `rArr 43x = 129 xx 15` `x=45^(@)` `rArr` Each angle `rArr (x+15)^(2)= 45+15 = 60^(@)` `rArr ((2x)/3+30)^(@)=60^(@)` `therefore` All three angles are equal `60^(@)` `therefore` Triangle will be equilateral triangle. |
|