`PQR` is a triangular park with `PQ=PR=200m`. A.T.V. tower stands at the mid-point of `QR`. If the
Channel: Doubtnut
Date: 26/01/2020

`PQR` is a triangular park with `PQ=PR=200m`. A.T.V. tower stands at the mid-point of `QR`. If the angles of elevation of the top of the tower at `P`, `Q` and `R` are respectively `45^(ulo)`, `30^(ulo)` and `30^(ulo)` then the height of the tower (in m ) is