Which of the statements given below are correct? 1. The author of the novel 'An Affair Downstairs' is Sherri Browning. 2. The author of the novel 'White Teeth' is Zadie Smith. 3. The author of the novel 'Atonement' is Ian McEwan.
The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)