Question

Calculate the time of place A (20 degree E).When it is 7:15 a.m at place B (16 degree 15 min W)

Answer 1

Answer:

We know that the hour hand completes one rotation in 12h, while the minute hand completes one rotation in 60 min.

Therefore, the angle traced by the hour hand in 12h is 360

∘

.

Angle traced by the hour hand in 7 h 20 min, i.e.,

3

22

h=(

12

360

×

3

22

)

∘

=220

∘

Also, Angle traced by the minute hand in 60 min=360

∘

Angle traced by the minute hand in 20 min=(

60

360

×20)

∘

=120

∘

Hence, Required angle between the two hands=220

∘

−120

∘

=100

∘

Ans: 100