For the following questions answer them individually
If the length of a chord of a circle is equal to that of the radius of the circle, then the angle subtended, in radians, at the centre of the circle by chord is
The value of $$(sec^{2}45^\circ-cot^{2}45^\circ)-(sin^{2}30^\circ+sin^{2}60^\circ)$$ is
The average salary of male employees in a firm was Rs. 5200 and that of females was Rs. 4200. The mean salary of all the employees was Rs. 5000. What is the % of female employees?
If $$4x=\sqrt{5}+2$$, then $$x-\frac{1}{16x}$$ ?
In ∆ABC, ∠B is right angle, D is the mid point of the side AC. If AB = 6 cm, BC = 8cm, then the length of BD is
The diagonals of two squares are in the ratio 5:2.The ratio of their area is
The angle of elevation of a ladder leaning against a wall is 60o and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is
The product of two 2-digit numbers is 2160 and their H.C.F. is 12. The numbers are
The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Rs. 1. The sum (in Rs.) is:
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