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TAKE DIFFERENT VALUES FOR X ,FIND ORESPONDING VALUES OF Y FROM EQUATIONS GIVEN .PLOT THEM..
X.........0......PI/6=30........PI/4=45.......PI/3=60......PI/2=90 DEG.....ETC....
3*SIN X...0.........1.5...........2.121.......2.598...........3............ETC....
SIN 3X....0..........1.............0.707.......0..............-1............ETC...
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