Posted by Sonia on Tuesday, July 20, 2010 at 4:22pm.
First, I'm going to give you
instructions and INFO for drawing
a picture of the problem. The picture
is the key to understanding the
problem. So it has to be drawn correctly.
1. Draw a horizontal line. 2. At the left end, draw a vertical line upward
to form a rt. angle. 3. Draw a hypotenuse from the top of vertical
line to rt. end of the horizontal
line. 4. Label the acute angle between
hyp. and the horizontal 57 deg.
5. Draw a 2nd hyp. from the top of
vertical line to horizontal line at
a point greater than half way to left
end. Label the acute angle formed
83 deg. 6. The distance between the
2 hyp. should be labeled 15km on the
hor. line.Label the remaining distance
X on hor. line. The total hor. dist.
= X + 15. 7. Label vertical line h.
Tan57 = h / (X+15), h = ( x + 15)7an57.
Tan 83 = h/X, h = X Tan83.
h = (X +15) Tan 57 = X Tan 83.
Solve for X:
(X +15)*1.54 = 8.14X
1.54X + 23.1 = 8.14X
X = 3,5km
h = X Tan 83 = 3.5 * 8.14 = 28.5km.=
My answer in the book was 32km, so how can I get this answer?
Sonia, check the angles and make sure
they are the same as those posted.
Oh sorry this is right, I read the wrong answer, thank u for your help:)
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