Question

Find the number of right angles turned through by the hour hand of a clock when it goes from$:$

$12$ to $6$

Answer 1

We know that $1$ right angle $=\frac{1}{4}$of a revolution

In one complete revolution number of hours $=12$

$1$ right angle $=\frac{1}{4}\times 12$

$=3$ hours

When we move $12$ to $6$$,$

in this time of interval number of hours$=6$ hours

$1$ right angle $=3$ hours

$2$ right angles $=6$ hours

Hence$,$ when we move $12$ to $6$ then we move $2$ right angles$.$