A boat man can row with a speed of 10 km/hr in still water. If the river flows at 5 km/h, the direction in which the boat man should row to reach a point on the other bank directly opposite to the point from where he started is (width of the river is 2km)
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya
a
In a direction inclined at 1200 to the direction of river flow
b
In a direction inclined at 900 to the direction of river flow
c
600 in the North-West direction
d
Should row directly along the river flow
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
ucosθ=u2−v2 u2cos2θ=u2−v2100cos2θ=100−25=75cos2θ=34cosθ=34=cos300,θ=300From the direction of river flow =30+90=1200