Posted by **Sammy** on Tuesday, October 2, 2012 at 9:23pm.

If the length of the hour and the minute hands of a clock are 4 cm and 6 cm, respectively, what is the distance in cm between the tips of the hands at two o'clock?

- Math -
**Steve**, Wednesday, October 3, 2012 at 11:00am
there are 30° per hour

at 2:00, the minute hand is at 90°-60°=30° (measuring from horizontal)

the hour hand is at 90-(60+30/6) = 25°

minute tip is at (6cos30°,6sin30°) = (5.2,3.0)

hour tip is at (4cos25°,4sin25°)=(3.6,1.7)

d^2 = 1.6^2 + 1.3^2

d = 2.1 cm

- Math -
**Steve**, Wednesday, October 3, 2012 at 11:02am
oops I was thinking 2:10

at 2:00, the hands are at (0,6) and (3.46,2)

d = 5.3 cm

## Answer This Question

## Related Questions

- pre calculus - The minute hand and the hour hand of a clock have lengths inches ...
- calculus - If the hands on a clocktower's clock are 2ft and 3ft long, how fast ...
- College Calculus - The hands of a clock in some tower are 4.5m and 2m in length...
- Math - The minute hand on a watch is 8mm long and the hour hand is 4mm long. How...
- Cosine Law - The minute hand of a clock is 12 cm long, and the hour hand is 10cm...
- math - the hour hand of a clock is 5 inches long and the minute hand is 6 inches...
- math Please HElp - The minute hand on a watch is 7 mm long and the hour hand is ...
- calculus - A certain clock has a minute hand that is 4 inches long and an hour ...
- calculus - A certain clock has a minute hand that is 4 inches long and an hour ...
- Calculus - On a certain clock the minute hand is 4 inches long and the hour hand...

More Related Questions