Tuesday

September 16, 2014

September 16, 2014

Posted by **jim** on Thursday, December 8, 2011 at 5:05pm.

please help i don't understand how to do this.

if you work it out this will help alot

- pre calc -
**Reiny**, Thursday, December 8, 2011 at 5:36pmThe hard part is finding the angle between the two hands.

Each hour represents 30°

so 11:40 = 11 2/3 hrs of rotation

the hour had is at the 350° position and the minute hand is at the 240° position,

so the angle between the two hands is 350-240 = 110°

now use the cosine law:

x^2= 5^2 + 6^2 - 2(5)(6)cos 110°

= 61 - 60cos110

= 81.5212

x = √81.5212 = 9.03 inches.

**Answer this Question**

**Related Questions**

math - the hour hand of a clock is 5 inches long and the minute hand is 6 inches...

trigonometry - a clock has a dial face of 12 inches radius the minute hand is 9 ...

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...

Cosine Law - The minute hand of a clock is 12 cm long, and the hour hand is 10cm...

Math - The minute hand on a watch is 8mm long and the hour hand is 4mm long. How...

Cosine Law NEED HELP QUCIK - The minute hand of a clock is 12 cm long, and the ...

math Please HElp - The minute hand on a watch is 7 mm long and the hour hand is ...

physics - A big clock has a minute hand 3 ft long and a second hand 4 ft long. ...