For the following questions answer them individually
If a 48 m tall building has a shadow of 48√3 m., then the angle of elevation of the sun is
O is the circumcentre of the triangle ABC and ∠BAC = 85°, ∠BCA = 75°, then the value of ∠OAC is
If $$x= p$$ $$cosec θ$$ and $$y= q$$ $$cot θ$$, then the value of $$\frac{x^2}{p^2}-\frac{y^2}{q^2}$$ is
From an aeroplane just over a straight road, the angles of depression of two consecutive kilometre stones situated at opposite sides of the aeroplane were found to be 60° and 30° respectively. The height (in km) of the aeroplane from the road at that instant was (Given √3 = 1.732)
In ΔABC, ∠C = 90° and AB = c, BC = a, CA = b; then the value of (cosec B - cos A) is
If 1 man or 2 women or 3 boys can do a piece of work in 44 days, then the same piece of work will be done by 1 man, 1 woman and 1 boy in
8 workers can build a wall 18 m long, 2 m broad and 12 m high in 10 days, working 9 hours a day. Find how many workers will be able to build a wall 32 m long, 3 m broad and 9 m high in 8 days working 6 hours a day ?
