From an aeroplane vertically above a straight horizontal road, the angles of depression of two consecutive mile stones on opposite sides of the aeroplane are observed to be `alphaa n dbeta` . Show that the height in miles of aeroplane above the road is give by `(tanalphatanbeta)/(tanalpha+tanbeta)`

From an aeroplane vertically over a straight horizontal road, the angles of depression of two consecutive kilometre-stones on the opposite sides of the aeroplane are observed to be alpha and beta. The height of the aeroplane above the road is

From an aeroplane vertically over a straight horizontal road, the angles of depression of two consecutive milestones on opposite sides of the aeroplane are observed to be alpha and beta . The height of the aeroplane above the road is

From an aeroplaneflying,vertically above a horizontal road,the angles of depression of two consecutive stones on the same side of aeroplane are observed to be 30^@ and 60^@ respectively.The height at which the aeroplane is flying in km is

From an aeroplane just over a straight road, the angles of depression of two consecutive kilometre is stones situated at opposite sides of the aeroplane were found to be 60^@ and 30^@ respectively. The height (in km) of the aerophlane from the road at that instant was (Given sqrt(3)= 1.732 )

An aeroplane is flying above a horizontal plane. The angle of depression of two consecutive mile stones at plane in opposite directions are respectively alpha and beta . Prove that height of the aeroplane is (tanalphatanbeta)/(tanalpha+tanbeta)

From an aeroplane just over a straight road, the angles of depression of two consecutive kilometer stones situated at opposite sides of the aeroplane were found to be 60^@ and 30^@ respectively. The height (in km) of the aeroplene from the road at that instant, is: एक विमान से ठीक सीधी सड़क पर, विमान की विपरीत दिशाओं में स्थित दो अनुक्रमिक किलोमीटर पत्थरों के अवनमन कोण क्रमशः 60^@ और 30^@ हैं। उस समय विमान की सड़क से ऊँचाई (किमी में) कितनी है?

From an aeroplane above a straight road the angle of depression of two positions at a distance 20 m apart on the road are observed to be 30^(@) and 45^(@) . The height of the aeroplane above the ground is :

From an aeroplane above a straight road the angles of depression of two positions at a distance 20 m apart on the road are observed to be 30^(@) and 45^(@). The height of the aeroplane above the ground is

From a balloon vertically above a straight road, the angle of depression of two cars at an instant are found to be 45^(@) and 60^(@) . If the cars are 100 m apart, find the height of the balloon.