SOLUTION: Two hikers are wandering through heavy woods with walkie talkies. The walkie talkies have a range of 100 yards. From their starting point, they head off at an angle of 109°10' of
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Question 1205892: Two hikers are wandering through heavy woods with walkie talkies. The walkie talkies have a range of 100 yards. From their starting point, they head off at an angle of 109°10' of each other. Hiker 1 walks 0.24 miles per hour, hiker 2 walks 0.17 miles per hour. If each continues to go straight, how long will it be before they can no longer communicate?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52898) (Show Source): You can put this solution on YOUR website!
.
Convert miles per hour to yards per hour.
After that, apply the law of cosine formula.
Happy calculations (!)
-------------------
Notice that cosine law equation in the post by @josgarithmetic is INCORRECT.
Do not use it.
The correct form of this equation is
= .
Use it to find the time x.
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
The hikers walk for x number of hours, according to given separation angle from starting point.
Simplify and solve for x.
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