Two force p and q acting on a particle are inclined at an angle
theta. If the sum of their resolved parts along a certain direction be X
and that along a perpendicular direction be Y, show that
x2 + y2 -P2-02
o= cos
2PQ
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yard yd 1 yd = 36 in
1 yd = 3 ft
kilometer (metric) km 1 km is about 0.6 mi
a kilometer is shorter than a mile
a kilometer is a little more than half a mile
1 km = 1000 m
mile mi 1 mi is about 1.6 km
a mile is longer than a kilometer
a mile is a little more than one and a half kilometers
1 mi = 5,280 ft
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