A car travels 6 km towards north at an angle of 45° to the east and then travels distance of 4 km towards north at an angle of 135° to the east. How far is the point from the starting point. What angle does the straight line joining its initial and final position makes with the east
A
and 
B
10 km and 
C
and
D
and
Text Solution
Verified by ExpertsThe correct answer is:
C
Net movement along x-direction S x = (6 – 4) cos 45° 
Net movement along y-direction S y = (6 + 4) sin 45° 
Net movement from starting point
= 
Angle which makes with the east direction
\ \ 
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