Arts (English Medium) इयत्ता ११ - CBSE Question Bank Solutions for Mathematics

Identify whether the following set is finite or infinite.

The set of positive integers greater than 100.

Identify whether the following set is finite or infinite.

The set of prime numbers less than 99.

State whether the following set is finite or infinite:

The set of lines which are parallel to the x-axis.

State whether the following set is finite or infinite:

The set of letters in the English alphabet.

State whether the following set is finite or infinite:

The set of numbers which are multiple of 5.

State whether the following set is finite or infinite:

The set of animals living on the earth.

State whether the following set is finite or infinite:

The set of circles passing through the origin (0, 0).

Find sets A, B and C such that A ∩ B, B ∩ C and A ∩ C are non-empty sets and A ∩ B ∩ C = Φ.

Find `sin  x/2, cos  x/2 and tan  x/2` of the following

`tan x = -4/3`, x in quadrant II

Find `sin  x/2, cos  x/2 and tan  x/2` of the following:

`cos x =  -1/3`, x in quadrant III

Find `sin  x/2, cos  x/2 and tan  x/2` of the following:

`sin x =  1/4`, x in quadrant II

Find the modulus  of  `(1+i)/(1-i) - (1-i)/(1+i)`

If (x + iy)³ = u + iv, then show that `u/x + v/y  =4(x^2 - y^2)`

Solve the given inequality graphically in two-dimensional plane: x + y < 5

Solve the given inequality graphically in two-dimensional plane: x – y ≤ 2