Page 1 :
31., , 32., , 33., 34., , 35,, 36., , 37., 38., 39., 40., , 41., , , , List all the elements of the set £ ={x:x is a prime factor of 21} [4], —_— ; 1 4, Rationalise the denominator of 50 [4], Arrange the following in ascending order: (2:3), (8:21) and (2:9) [4], Factorise x? — x-90 [4], Find the value of cos ec30° + cot 45” [4], The equal sides of an isosceles triangle are 12cm each and its perimeter is 30cm. Find the area of the, triangle using Hero’s formula [4], Find the GCD and LCM of: x?-5x+6 and x?-4 [4], Prove that the angles opposite to equal sides of a triangle are equal. [4], Find the remainder when x? + 3x? +3x+1 is divided by x [4], If two parallel lines are intersected by a transversal, prove that each pair of co-interior angles are, supplementary. [4], 3-22, , Find the values ofa and , if =a-by2, , ind the values of a and b, 1 34.22 [6]