A contractor was awarded to construct a vertical pillar at a horizontal distance of 100mfrom a fixed point it was decided . that the angle of elevation the top of compelte pillar from point to be 60 degree. contractor finish the job by making a pillar such that the angle of elevation of was 45 degree (1) Find the height of the pillar to be increase as the per the term of the contract (2) contractor demands for the full payment for this work justify which value is he liking .

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