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Start learning 50% faster. Sign in nowA number is divisible by 11, if the difference between the sum of its digit at even places and the sum of its digits at odd places is either 0 or a number divisible by 11. ( 9 + * + 7 + 4 ) – ( 4 + 6 + 1 ) = 0 or multiple of 11 ⇒ 20 + * - 11 = 11 ⇒ * + 9 = 11 * = 11 - 9 = 2 * = 2
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A pole 6 m high casts a shadow 2√3 m long on the ground. Find the angle of elevation
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The angle of elevation of the top of a building from a point on the ground is 30° and moving 40 meters towards the building it becomes 60°. The ...
Two ships are on opposite sides in front of a lighthouse in such a way that all three of them are in line. The angles of depression of two ships from th...
A man 3 m tall is 19 m away from a tower 22 m high. Determine the angle of elevation of the top of the tower from the eye of the observer.
The angle of elevation of the top of a building from a point on the ground is 30° and moving 40 meters towards the building it becomes 60°. The height...
