Posted by **Valentine** on Tuesday, March 15, 2011 at 1:08pm.

Helen stands 66 m away from the base of the tree. If the line of sight makes an angle of 30 with the top of the tree with respect to the horizon. What is the height (h) of the tree?

- Math -
**ABC123DoReMi**, Tuesday, March 15, 2011 at 3:53pm
h= 66 root 3 or 66 multiplied by the sq. root of 3.

- Math -
**ABC123DoReMi**, Tuesday, March 15, 2011 at 3:57pm
first turn this into a triangle...

the base is 66 and you know two of the angles (30 deg. and 90 deg (the base and the ground)). Now this is a 30-60-90 triangle. the rules 4 30-60-90 is the base is x, the hyp. is 2x and the other leg is x multiplied by the sq. root of 3. you know x (66) so your answer is 66 multiplied by the sq. root of 3

## Answer This Question

## Related Questions

- HELP! URGENT! (geometry) - Helen stands 66 m away from the base of the tree. If ...
- Trigonometry - A TREE STANDS ON HORIZONTAL GROUND. THE ANGLE OF ELEVATION OF THE...
- math - The trunk of a leaning tree makes an angle of 12 degrees with the ...
- Geometry - at 10 feet away from the base of a tree, angle the top of a tree ...
- maths - A tree stands vertically on a hill side which makes an angle of 15 ...
- Geometry - A six-feet tall person wants to know the height of a tree. The person...
- math - From 70 feet away from the base of a tree on level ground, the angle to ...
- physics - An observer, whose eyes are 1.87 m above the ground, is standing 27.0 ...
- physics - An observer, whose eyes are 1.97 m above the ground, is standing 47.0 ...
- math - 4. A tree stands vertically on top of a hill whose angle of inclination ...

More Related Questions