Question

A boy standing in the middle of a field, observes a flying bird in the north at an angle of elevation of 30° and after 2 minutes, he observes the same bird in the south at an angle of elevation of 60°. If the bird flies all along in a straight line at a height of m, then its speed in km/h is??

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Answer 1

Answer:

HOPE IT HELPS YOU!!

Step-by-step explanation:

ans is 6km/hr

{take tan 60=50root 3/x , tan 30 =50 root 3/y , then add x+y ,this x+y is the distance travelled by it , given time t=2min=2/60 hrs

you will get x+y=200m=0.2 km

velocity =d/t=0.2*60/2 km/hr}

Answer 2

『ANSWER』

= 6km/hr

{take tan 60=50root 3/x , tan 30 =50 root 3/y , then add x+y ,this x+y is the distance travelled by it , given time t=2min=2/60 hrs

you will get x+y=200m=0.2 km

velocity =d/t=0.2*60/2 km/hr}

Pardon if wrong.