For the following questions answer them individually
If $$x^2+y^2=29$$ and xy=10, where x>0,y>0,x>y then the value of $$\frac{x+y}{x-y}$$ is
The ratio of circumradius and inradius of an equilateral triangle is
AB is a diameter of the circle with centre O , CD is chord of the circle , If ∠BOC = 120° , then the value of ∠ADC is
A straight tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle of 30° with the ground . The distance from the foot of the tree to the point , where the top touches the ground is 10 m. Find the total height of the tree?
The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525 . The simple interest on the same sum for double the time at half the rate percent per annum is :
If tan θ = tan 30° . tan 60° and θ is an acute angle , then 2θ is equal to
Study the following Bar graph and answer the question . The Bar Graph gives the annual rates of inflation in percentages for 1975 and 1987.
From 1975 to 1987 , inflation rate increased in the third world countries approximately by
The change in rate of inflation was least in which of the following .
Comparing the figures for USA vis-a-vis the developed nations , it can be concluded that
In the year 1987 , the inflation rate in the third world countries vis-a-vis the world jumped approximately by