`(1+tan^2(4 5^(@)-A))/(1-tan^2(4 5^(@)-A))=c o s e c2A`

(tan(4 5^(@)+A)+tan(4 5^(@)-A))/(tan(4 5^(@)+A)-tan(4 5^(@)-A))=cosec2A

tan(cos^(-1)((4)/(5))+tan^(-1)((2)/(3)))=

The value of tan (cos ^(-1) (4)/(5)+tan ^(-1) (2)/(3)) is

If 2tan^(- 1)(c o s e c(tan^(- 1)(x))-tan(cot^(- 1)(x)))=tan^(- 1)y then y is equal to

The value of tan[ cos^(-1) ((4)/(5)) + tan^(-1) ((2)/(5)) ] will be

If "tan"^(2)(pi-4)/(4)+"tan"^(2)(pi-B)/(4)+"tan"^(2)(pi-C)/(4)=1 , then Delta ABC is

Prove the following: 4tan^(-1)1/5-tan^(-1)1/(70)+tan^(-1)1/(99)=pi/4 2t a n^(-1)1/5+s e c^(-1)(5sqrt(2))/7+2tan^(-1)1/8=pi/4

int(2e^(5x)+e^(4x)-4e^(3x)+4e^(2x)+2e^(x))/((e^(2x)+4)(e^(2x)-1)^(2))dx= a) "tan"^(-1)(e^(x))/(2)-(1)/(e^(2x)-1)+C b) "tan"^(-1)e^(x)-(1)/(2(e^(2x)-1))+C c) "tan"^(-1)(e^(x))/(2)-(1)/(2(e^(2x)-1))+C d) 1-"tan"^(-1)((e^(x))/(2))+(1)/(2(e^(2x)-1))+C

Evaluate: (i) tan{cos^(-1)(-7/(25))} (ii) "c o s e c"{cot^(-1)(-(12)/5)} cos{tan^(-1)(-3/4)}

if tan ^(2)""(pi-A)/(4)+tan^(2)""(pi-B)/(4) + tan^(2)""(pi-C)/(4) =1, then DeltaABC is