Question

The supplement of five-sixth of a right angle is:

• A. $5^{\circ }$
• B. ${105}^{\circ }$
• C. ${95}^{\circ }$
• D. ${126}^{\circ }$

Answer 1

Answer: (B)

${105}^{\circ }$

Five sixth of right angle $=\frac{5}{6}\times {90}^{\circ }={75}^{\circ }$

Let the supplement be $x$

$\therefore x+{75}^{\circ }={180}^{\circ }\Rightarrow x={180}^{\circ }-{75}^{\circ }\Rightarrow x={105}^{\circ }$