Zero Degrees

Q. The angle between two straight bars is ${30}^o.$

If bar A and bar B are rotated by ${15}^o$ and ${45}^o$ respectively in an anticlockwise direction about the joining point, then what will be the angle between both bars?

1. ${75}^o$
2. ${60}^o$
3. ${30}^o$
4. $0^o$

Q.

In the diagram above, $\angle AOB=$

1. ${90}^{\circ }$
2. ${180}^{\circ }$
3. $0^{\circ }$

Q. At noon, the angle between hour hand and minute hand is degree(s).

Q. A man was initially travelling in the west direction. Later, he made a right turn. What is the angle of the current direction of travel with the north in degrees?

Q. Three friends were gossiping with each other. After some time, one of the friends started walking in the north direction. A few minutes later, the other friend started to walk in the north direction from the same starting point. Find the angle between the direction of walking of the two friends.

1. ${45}^o$
2. ${10}^o$
3. ${10}^o$
4. $0^o$

Q. The angle between two straight bars is ${30}^o.$

For what minimum angle any of the bars must be rotated about the common point to make the angle between them as $0^o.$

1. Rotation of bar A by ${30}^o$ in clockwise direction.
2. Rotation of bar A by ${30}^o$ in anticlockwise direction.
3. Rotation of bar B by ${30}^o$ in clockwise direction.
4. Rotation of bar B by ${30}^o$ in anticlockwise direction.