3. An aeroplane at an altitude of 300 m observes the angles of depress

1.	3. An aeroplane at an altitude of 300 m observes the angles of depression of oppositepoints on the two banks of a river to be 45 and 60. Find the width of the river.
Answer» As we know tan= perpendicular/baseSo,heretan 45=300/base1=300/basebase=300m. tan 60=300/base=300/basebase=300/base=300/3base=100m Now add both the bases300+100√3m (Either leave it here or...)300+100(1.73)300+173473m

3. An aeroplane at an altitude of 300 m observes the angles of depression of oppositepoints on the two banks of a river to be 45 and 60. Find the width of the river.

Answer»

As we know tan= perpendicular/baseSo,heretan 45=300/base1=300/basebase=300m.

tan 60=300/base=300/basebase=300/base=300/3base=100m

Now add both the bases300+100√3m (Either leave it here or...)300+100(1.73)300+173473m