An observer in a boat finds that the angle of elevation of a tower standing on the top of a cl

Doubtnut

To ask Unlimited Maths doubts download Doubtnut from – https://goo.gl/9WZjCW An observer in a boat finds that the angle of elevation of a tower standing on the top of a cliff is `60^@` and that of the top of cliff is `30^@`. If the height of the tower be `60` meters, then the height of the cliff is

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