Present age of Arvind = 67 – 19 = 48 years Present age of Ravi = 48 + 4 = 52 years Now, ratio between the ages of Samar and Ravi = 9:13 Since, Ravi’s age = 52 years Therefore, 13 unit = 52 years 1 unit = 4 years Similarly, Samar’s present age = 9 × 4 = 36 years Samar age 13 years ago = 36 – 13 = 23 years
A Navy captain going away from a lighthouse at the speed of 4[(√3) – 1] m/s. He observes that it takes him 1 minute to change the angle of e...
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Now a chord of a circle is such that AB = 10 cm. If the diameter of the circle is 20 cm, then the angle subtended by the chord at the center is.
There is a fire in the building. A man on the top of the building see a Fire brigade van coming towards it. If it takes 8 minutes for the angle of depre...
A man whose height is 1.5 metres is standing 24√3 metres away from a light pole. The angle of elevation from his head to the top of the light pole...
At a point 20 metres away from the base of a 20√3, metres high house, the angle of elevation of the top is
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The angle of depression of a point on the ground as seen from the top of a tower, 35 feet high, is 45°. Find the distance of the point on the ground fr...
