A man at M, standing 100 m away from the base (P) of a chimney of height 50 m, observes the angle of elevation of the highest point (Q) of the smoke to be 45°.The highest point of the chimney is at R. Further, P, R and Q are in a straight line and the straight line is perpendicular to PM. What is the angle RMQ equal to ?
tan⁻¹(1/2)
tan⁻¹(1/3)
tan⁻¹(2/3)
tan⁻¹(3/4)
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy