An observer at an anti air craft post A identifies an enemy aircraft due East of his post at a
79 views · Published 13 October 2018 · 4:59 · Indexed 22 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW An observer at an anti air craft post A identifies an enemy aircraft due East of his post at an angle of elevation of `60^@`. At the same instant a detection post D 4kms south of A reports the aircraft at an elevation of `30^@`. Calculate the altitude at which the plane is flying.
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