`cot(x-y)=(cotxcoty+1)/(coty-cotx) `

(cos ec x+cot x)/(cos ecx-cotx)

If x+y+z=0 then cot(x+z-y),cot(x+y-z)+cot(x+y-z),cot(y+z-x)+cot(y+z-x)*cot(z+x-y)=

cot^(-1)("cosec x"+cotx)

(dy)/(dx)coty=cos(x+y)+cos(x-y) A) log(secy+tany)=2cos x+c B) log(cosecy-coty)=2sinx+c C) log(cosy-coty)=2cosx+c D) cosy-coty=c.e^(cosx)

Let f(x)=("cosec "x+cotx-1)/(1+cotx-"cosec "x) . The Primitive of f(x) with respect to x is equal to

y=(tanx)^(cotx)+(cotx)^(tanx)

cotx cot 2x - cot 2x cot 3x - cot 3x cot x = 1

If x+y+z=0 , show that : cot(x+y-z) cot (z+x-y) +(cot(x+y-z) cot (y+z-x)+cot(y+z-x) cot (z+x-y)=1

The number of solutions of equation cos2x-3cos x+1=(1)/((cot2x-cotx).sin(x-pi)) in [0,4pi] is