Sunday

March 29, 2015

March 29, 2015

Posted by **Meenakshi** on Thursday, December 13, 2012 at 12:22pm.

- maths --plse help me.. -
**Reiny**, Thursday, December 13, 2012 at 12:44pmmake a sketch, label the height as h

distance from last position to the tower as x

tan (alpha) = h/(x+a)

h = (x+a)tan alpha

in the same way

h = xtan beta

(x+a)tan alpha = xtan beta

x tan alpha - xtan beta = - a tan alpha

x(tan alpah - tan beta) = -a tan alpha

x = -a tan alpha/(tan alpha - tan beta)

x = a tan alpha /(tan beta - tan alpha)

h = xtan beta

= a tan alpha * tan beta/(tan beta - tan alpha)

as requested

**Answer this Question**

**Related Questions**

Trig - From a point P on level ground, the angle of elevation of the top of a ...

trigonometry - Mickey determines that the angle of elevation from his position ...

Math - If an observer stands at a certain point in the same horizontal plane as ...

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

calculus - I need help with the following problem: From a point 50 meters from ...

trig - a tower that is a 200 meters is leaning to one side. from a certain point...

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

math - Jack looks at a clock tower from a distance and determines that the angle...

Math - to measure the height of the Eiffel Tower in Paris, a person stands away ...

MAth Igcse - The angle of elevation of the top of a tower is 27 degrees from ...