A contract was awarded to construct a vertical pillar at a horizontal distance of 100 m from a fixed point. It was decided that angle of elevation of the top of the complete pillar from this point to be 60. Contractor finished the job by making a pillar such that angle of elevation of its top was 45. (a) find the height of the pillar to be increased as per the terms of contract. (b) contractor demands for the full payment for this work. Is he justified?
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