If `A+B=45^0` then prove that (1+tanA)(1+tanB)=2 .On the basis of the result obtained prove that tan`22.5^0= sqrt2-1`

If A+B=45^(@) then prove that (1+tan A)(1+tan B)=2. On the basis of the result obtained prove that tan22.5^(0)=sqrt(2)-1

If A-B=pi/4 , then prove that: (1+tanA)(1-tanB)=2

If A+B = pi/4 , then prove that (1+tanA ) (1+tanB)=2 .

If A+B = (pi)/4 , then prove that (1+tanA)(1+tanB) = 2 .

If A+B=pi/4 , prove that: (1+tanA)(1+tanB)=2

If A + B = 45^@ , show that (1+tanA) (1+tanB) =2

If A+B=45^(@) , show that (1+tanA)(1+tan B)=2 .

If A+B=90^(@) then prove that 1+(tanA)/(tanB)=sec^(2)A.

If A+B=45^(@),"show that"(1+tanA)(1+tanB)=2.

Prove that: tanA(1+sec2A)=tan2A