The coordinates of the incentre of the triangle whose sides are 3x – 4y = 0, 5x + 12y = 0 and y – 15 = 0, are

Two circles having radii 5 units intersect each other in such a way that each of them passes through the centre of the other. Then the length of their common chord is

Find the value tanθ-cosθ in the given figure.

Find the value of

Find the value of sin² 10 + sin² 20 + sin² 30 + ....... + sin² 80.

Find mean of first five prime number.

The heights of Arun’s family members are given in cm’s as 165, 180, 181, 163, 172, 180, 162 The median height of the family will be

The value of is closest to