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The line joing two points A(2,0)and B(3,1)I rotated about A in anti clockwise direction through an angle of `15^@`.If B goes to C in the new position,what will be the co-ordinates of C?

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UNITED BOOK HOUSE-JODHPUR PARK BOYS'S SCHOOL-EXERCISE
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  17. Find principal amplitude of (1+itan((3pi)/5))

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