Question

Angles of a triangle are in the ratio $3:4:5$. The smallest angle is ${45}^o$.

• A. True
• B. False

Answer 1

The correct option is A True

Angles of the triangle are in the ratio $3:4:5$
Let the angles be $3x,4x$ and $5x$
Sum of the angles of the triangle $=180$
Thus, $3x+4x+5x=180$
$12x=180$
$x=15$
Thus, the angles are ${45}^o,{60}^o$ and ${75}^o$.