Posted by Pam on Friday, December 19, 2008 at 2:26pm.
the tower makes an angle of 84.5º with the ground.
let x m be the length of the shadow, then by the Cosine Law
x^2 = 90^2 + 55.9^2 - 2(90)(55.9)cos 84.5º
etc.
where did you get the 84.5º from?
thanks so much!
oh yeah thats true where does the 84.5 degrees come from?
A vertical makes a right-angle with the horizontal
The tower is off 5.5º from the vertical.
5.5º + ? = 90 ??
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