If `sinx+cosx+tanx+cotx+secx+cosecx=7 and sin2x=a-bsqrt(7)`, then ordered pair (a,b) can be (A) (6,2) (B) (8,3) (C) (22,8) (D) (11,4)

If sinx+cosx+tanx+cotx+secx+cosecx = 7 and sin2x = a-bsqrt2 , then ordered pair (a,b) can be :

Salivary amylase act at a pH of (a) 6.8 (b) 8 (c) 1.2 (d) 7.4

If a ,b in {1,2,3,4} and a x^2+b x+1=0 has real roots then number of possible ordered pairs of (a , b) is (a)6(b) 7 (c) 10 (d) 12

intx^2/(xsinx+cosx)^2dx=-(xsecx)/(xsinx+cosx)+f(x)+c , then f(x) may be (A) sinx (B) xsinx (C) tanx (D) cotx

If the points (5,-1,1),(-1,-3,4) and (1,-6,10) are three vertices of a rhombus taken in order then which one of the following ils the fourth vertex? (A) (7,-4,11) (B) (3,(-7)/2,11/2) (C) (7,-4,7) (D) (7,4,11)

If int (3sinx+2cosx)/ (3cosx+2sinx) dx=a x+b ln|2sinx+3cosx|+C , then (a) a=-(12)/(13),b=(15)/(39) (b) a=-7/(13),b=6/(13) (c) a=(12)/(13),b=(15)/(39) (d) a=-7/(13),b=-6/(13)

The number of solutions of the equation tanx+secx=2cosx lying in the interval [0,2pi] is 0 (b) 1 (c) 2 (d) 3

The centre of a circle whose end points of a diameter are (-6,3) and (6,4) a) (8,-1) b) (4,7) c) (0, 7/2 ) d) (4, 7/2 )

The centre of a circle whose end points of a diameter are (-6,3) and (6,4) a) (8,-1) b) (4,7) c) (0, 7/2 ) d) (4, 7/2 )

The centre of a circle whose end points of a diameter are (-6,3) and (6,4) a) (8,-1) b) (4,7) c) (0, 7/2 ) d) (4, 7/2 )