Sunday

December 21, 2014

December 21, 2014

Posted by **eekim** on Tuesday, July 12, 2011 at 10:11am.

- trigonometry -
**Reiny**, Tuesday, July 12, 2011 at 10:41ammake a diagram

label the tower AB , where A is the top of the tower.

label the man's first position C, his second position D

so that DC = 300

Look at triangle ADC,

angle D = 35°

angle ACD = 110° , so then

angle DAC = 35°

so the triangle is isosceles (lucky) and AC = 300

Then in the right-angled triangle ACB ,

sin70 = AB/300

AB = 300sin70 = 281.9 m

(had the triangle not been isosceles, I would have used the Sine Law to find AC )

**Answer this Question**

**Related Questions**

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

geometry - An engineer determines that the angle of elevation from his position ...

Math - On top of the sears building is a tv tower. From a point 300 ft away the ...

Math - On top of the sears building is a tv tower. From a point 300 ft away the ...

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

physics - the angle of elevation to the tower is 30 degree and then moved ...

trig - A person stands at a distance from the tower and eyes the top of the ...

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

math trigonometry - two office towers are 31 m apart. From the top of the ...

trigonometry - From lookout tower 80ft. high, a man observes from a position 6.5...