If `t a n1^0=t ,` the value of `"cos"2^0+"t s i n"2^0` is `t` 2. `1` 3. `1/2` 4. 0 5. -1

Value of (cos 12^0+s in 12^0)/(cos 12^0-s in 12^0) is equal to t a n 417^0 b. t a n 237^0 c. t a n 57^0 d. t a n 663^0

If (1+t a n1^0)dot(1+t a n2^0)dot(1+t a n3^0)(1+tan45^0)=2^n , then ' n ' is equal to 16 b. 23 c. 3 0 d. none of these

If s=(t^(3))/(3)-(1)/(2)t^(2)-6t+5 , Find the value of (d^(2)s)/(dt^(2)) at t=1

If T_n =sin^n theta+cos^n theta, then (T_6-T_4)/T_6 =m holds for values of m satisfying (A) m in [-1, 1/3] (B) m in [0, 1/3] (C) m in [-1,0] (D) m in [-1, - 1/2]

Statement :1 If a parabola y ^(2) = 4ax intersects a circle in three co-normal points then the circle also passes through the vertr of the parabola. Because Statement : 2 If the parabola intersects circle in four points t _(1), t_(2), t_(3) and t_(4) then t _(1) + t_(2) + t_(3) +t_(4) =0 and for co-normal points t _(1), t_(2) , t_(3) we have t_(1)+t_(2) +t_(3)=0.