A man 1.9m tall observes the angle of elevation of the top and bottom of a mast as 65° and 41° respectively.If the mast is moed on a house 12m tall,find correct to 3 significant figures I.distance of the man from the house and the length of the pillors
2 answers
14m
If the distance is x, then
10.1/x = tan41°
x = 10.1/tan41°
If the mast's height is h, then
(10.1+h)/x = tan65°
so h = x tan65° - 10.1
h = 10.1/tan41° * tan65° - 10.1 = 10.1 (tan65°/tan41° - 1)
no idea what the "pillors" are
10.1/x = tan41°
x = 10.1/tan41°
If the mast's height is h, then
(10.1+h)/x = tan65°
so h = x tan65° - 10.1
h = 10.1/tan41° * tan65° - 10.1 = 10.1 (tan65°/tan41° - 1)
no idea what the "pillors" are