A surveyor measures the distance across a straight river
by the following method: Starting directly across from a
tree on the opposite bank, she walks 100 m along the
riverbank to establish a baseline. Then she sights across
to the tree. The angle from her baseline to the tree is
35.0°. How wide is the river?

Question

A surveyor measures the distance across a straight river
by the following method: Starting directly across from a
tree on the opposite bank, she walks 100 m along the
riverbank to establish a baseline. Then she sights across
to the tree. The angle from her baseline to the tree is
35.0°. How wide is the river?

goformit100 · Answer

@Eyad

anonymous · Answer

WTH ,You copy+paste !!!

anonymous · Answer

Show your work :P

terenzreignz · Answer

I will kill myself if I'm ever asked to do this mentally...
or maybe I'll kill the instructor :P

JK

goformit100 · Answer

@Eyad Sir Sir Vector is among the weakest chapter of mine

anonymous · Answer

@terenzreignz will do it ?

terenzreignz · Answer

Who needs vectors?
|dw:1367154306851:dw|

goformit100 · Answer

ok

anonymous · Answer

Use Trig .

terenzreignz · Answer

The surveyor starts here...|dw:1367154405038:dw|

goformit100 · Answer

ok

terenzreignz · Answer

Moves 100 metres....
So that the angle to the tree is 35 degrees|dw:1367154463542:dw|

terenzreignz · Answer

So... finding that question marked value should be a cinch... :)

terenzreignz · Answer

Still blanked?
$$\Large \tan(35^o)=\frac{?}{100}$$

goformit100 · Answer

ok its easy for me now I can do it now :) Thanks

terenzreignz · Answer

Awesome :)