Tuesday

September 30, 2014

September 30, 2014

Posted by **Anonymous** on Saturday, April 6, 2013 at 12:57am.

- math -
**Henry**, Monday, April 8, 2013 at 5:02pmtan20o = Y/X1

Y = X1*tan20.

tan10o = Y/(X1+X2).

Y = (X1+X2)*tan10

X1*tan20 = (X1+X2)*tan10

X2 = 189 Ft.

X1*tan20 = (X1+189)*tan10

X1*tan20 = X1*tan10+189*tan10

X1*tan20-X1*tan10 = 189*tan10

0.364X1-0.176X1 = 33.33

0.188X1 = 33.33

X1 = 177.3 Ft.

Y = h = X1*tan20 = 177.3*tan20=64.5 Ft.

- math -
**Henry**, Monday, April 8, 2013 at 5:10pmNOTE: 2 rt. triangles were formed with a common vert. side and a shared hor. side(X1 and X2).

**Answer this Question**

**Related Questions**

math - the angle of elevation from point on the ground to the top of a pyramid ...

Pre-Calculus - 1.The angle of elevation to top of a building from a point on the...

trigonometry - The angle of elevation of the top of a tower to point A on the ...

Alg/Trig - The angle of elevation from a point on the ground to the top of a ...

Trig - The angle of elevation to the top of a building from a point on the ...

trigonometry - a surveyor finds that from Point A on the ground the angle of ...

Math - In this diagram, one person is standing at point A, one person is at ...

Math - 1. A rangers tower is located 44m from a tall tree. From the top of the ...

Trig - The angle of elevation from a point on the ground to the top of a tower ...

maths - The angle of elevation of the bottom of a window 10 meter above the ...