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)

A sum of Rs. 3000 amounts to Rs. 6000 in two years at compound interest. The interest for four years is

If cosA + cos2A = 1 then the value of sin2A + sin4A is

If the measures of the angles of a triangle are in the ratio. 1:2:3 and if the length of the smallest side of the triangle is 10cm, then the length of the longest side is

The length of a chord which is at a distance of 5cm from the centre of a circle of radius 13cm is

If x +y = √3 and x - y = √2, then the value of 8xy (x2 + y2) is

If a + b = 17 and a - b = 9 then the value of (4a2 + 4b2) is,

If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make