" 9."tan^(2)x

If 10 sec^(2)x - 9tan^(2)x= 13 and 0^@le x lt 90^@ then x = _____

Given that for all real x, the expression (x^(2)-2x+4)/(x^(2)+2x+4) lies between (1)/(3) and 3 the values between which the expression (9tan^(2)x+6tanx+4)/(9tan^(2)x-6tanx+4) lies are

3sinx+4cosx=5implies6tan""(x)/(2)-9tan^(2)""(x)/(2) =

y=3^(log_(9)(1+tan^(2)x)) then (dy)/(dx)=

If int \ sqrt(cos^3x/sin^11x) \ dx = -2(A tan^(9//2)x + B tan^(5//2) x) + C, then find A and B.

int sqrt((cos^(3)x)/(sin^(11)x)){dx=-2(A tan^(9/2)x+B tan^(5/2)x)+C then find A and B

If 5(tan^(2)x-cos^(2)x)=2cos2x+9 , then the value of cos4x is