`(c o s e c A)/(a s e c A-1)+(c o s e c A)/(c o s e c A+1)=2+2tan^2A`

Prove: (cos e c\ A)/(cos e c\ A-1)+(cos e c\ A)/(cos e c\ A+1)=2sec^2A

int(secx)/(1+c o s e c x)dx

Evaluate each of the following: "c o s e c"^(-1)("c o s e c"pi/4) (ii) "c o s e c"^(-1)("c o s e c"(3pi)/4)

Evaluate each of the following: "c o s e c"^(-1)("c o s e c"(6pi)/5) (ii) "c o s e c"^(-1)("c o s e c"(11pi)/6)

Evaluate each of the following: "c o s e c"^(-1)("c o s e c"(13pi)/6) (ii) "c o s e c"^(-1){"c o s e c"(-(9pi)/4)}

Evaluate each of the following: "c o s e c"^(-1)("c o s e c"pi/4) (ii) "c o s e c"^(-1)("c o s e c"(3pi)/4)

Evaluate each of the following: "c o s e c"^(-1)("c o s e c"(6pi)/5) (ii) "c o s e c"^(-1)("c o s e c"(11pi)/6)

Evaluate each of the following: "c o s e c"^(-1)("c o s e c"(13pi)/6) (ii) "c o s e c"^(-1){"c o s e c"(-(9pi)/4)}

The solution set of the ineuality (c o s e c^(- 1)x)^2-2c o s e c^(- 1)xgeqpi/6(c o s e c^(- 1)x-2) is (-oo,a] uu [b,oo) , then (a+b) equals

Prove that (cotA-cosA)/(cotA+cosA)=(c o s e cA-1)/(c o s e cA+1) .