micabar2696
the hands of a clock have lengths 3cm and 5cm. Find the distance between the tips of the hands at 4 o´clock. Worked solutions please



This Question is Closed

Mertsj
Best Response
You've already chosen the best response.
0
dw:1359331442099:dw

Mertsj
Best Response
You've already chosen the best response.
0
The angle made by the hands is 120 degrees. How about the law of cosines to find the missing side of the triangle?

micabar2696
Best Response
You've already chosen the best response.
0
how do i measure that angle?

Mertsj
Best Response
You've already chosen the best response.
0
\[c^2=a^2+b^22bc \cos C\]

Mertsj
Best Response
You've already chosen the best response.
0
How many degrees in a circle?

micabar2696
Best Response
You've already chosen the best response.
0
360

Mertsj
Best Response
You've already chosen the best response.
0
Since there are 12 hours on the clock face, divide 360 by 12.

Mertsj
Best Response
You've already chosen the best response.
0
Since there are 12 hours on the clock face, divide 360 by 12.

micabar2696
Best Response
You've already chosen the best response.
0
thaanks! :)

Mertsj
Best Response
You've already chosen the best response.
0
Do you understand?

Mertsj
Best Response
You've already chosen the best response.
0
When the hand moves from the 12 to the 1, it goes 30 degrees. So when it goes from the 12 to the 4 it goes 4 times 30 or 120 degrees.

micabar2696
Best Response
You've already chosen the best response.
0
yes! thank you!

Mertsj
Best Response
You've already chosen the best response.
0
yw