19. Mohit, standing in the midst of a field, observes a flying bird in

1.	19. Mohit, standing in the midst of a field, observes a flying bird in his north at an angleolevation of 30° and after 2 minutes he observes the bird inof 609. If the bird flies in a straight line all along at a height of 50 3 metres, let us find itsspeed in kilometre per hourevationhis south at an angle of el
Answer» tan30=50√3/x 1/√3=50√3/x 150=x √3=50√3/y y=50 total distance covered =x+y=200m .2km time=2/60hr speed=6km/hr

19. Mohit, standing in the midst of a field, observes a flying bird in his north at an angleolevation of 30° and after 2 minutes he observes the bird inof 609. If the bird flies in a straight line all along at a height of 50 3 metres, let us find itsspeed in kilometre per hourevationhis south at an angle of el

Answer»

tan30=50√3/x

1/√3=50√3/x

150=x

√3=50√3/y

y=50

total distance covered =x+y=200m

.2km

time=2/60hr

speed=6km/hr