Gujarat BoardEnglish MediumSTD 9MathsLines and Triangles2 Marks
Question
Two complementary angles are in the ratio $4 : 5$. Find the angles.
✓
Answer
Let the angles be $4 x$ and $5 x$, respectively.
Then, $4 x+5 x=90 $
$\Rightarrow 9 x=90 $
$\Rightarrow x=10^{\circ}$
Hence, the two angles are $4 x=4 \times$
$10^{\circ}=40^{\circ}$ and $5 x=5 \times 10^{\circ}=50^{\circ}$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.