If rsin∅ =1, rcos∅=√3, then the value of r2tan∅ is

The average of runs scored by a cricketer in his 99 innings is 99. How many runs will he have to score in his 100th innings so that his average of runs in 100 innings may be 100?

(1132 + 1152 + 1172 - 113 x 115 - 115 x 117 - 117 x 113) is equal to

If 4x2 - 12x + k is a perfect square, then the value of k is

The value of 1+tan2∅(1-sin2∅) is

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =

An exterior angle of a triangle is 115 deg and one of the interior opposite angle is 45 deg. Then the other two angles are

If x+1x:x-1x=5:3 then the value of x is