*Commonly used values
*Commonly used values
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*Range of T – fns sinθ & cosθ ε [ -1, +1]
*Range of T – fns sinθ & cosθ ε [ -1, +1] tanθ & cotθ ε (– ∞ , +∞) cosecθ & secθ ε (– ∞, – 1] U [+1, +∞)
*Sin & cos as projections
*Sin & cos as projections Actually cos & sin gives us an ideas of projections (shadows) of a line on x & y axis respectively. Consider a line of length L making an anticlockwise angle q with + x axis. Let Lx (= ON) &Ly (= OM) be its x & y projections, then If […]
*Quadrant system Signs of T – ratios are actually sign of cartesian coordinate system.
*Quadrant system Signs of T – ratios are actually sign of cartesian coordinate system.
Angle measurement
<Angle measurement Anticlock wise angles are taken as positive & clockwise as negative (using right hand rule). 1revolution =1rotation = 1 cycle = 2p rad = 3600
^A long horizontal fixed wire carries a current of 100 A. Directly above and parallel to it is another wire carrying a current of 20 A and weighing 0.04 N/m.
^A long horizontal fixed wire carries a current of 100 A. Directly above and parallel to it is another wire carrying a current of 20 A and weighing 0.04 N/m. The separation between the two wires so that the upper wire is just supported by the magnetic repulsion is
A long horizontal fixed wire carries a current of 100 A.
A long horizontal fixed wire carries a current of 100 A. Directly above and parallel to it is another wire carrying a current of 20 A and weighing 0.04 N/m. The separation between the two wires so that the upper wire is just supported by the magnetic repulsion is (A.) 3 cm (B.) 2 cm […]
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study of charges producing electric field that does not change with time
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