Question

If A+B=
find the values of
(i) (1 + tan A) (1 + tan B)
(ii) (cot A - 1) (cot B - 1)​

Answer 1

Answer:

Write the value of A+B

I) (1 + tan A) (1 + tan B)

= 1 + tanA + tanB + tanAtanB

= (1 + tanAtanB ) + (tanA + tanB)

Dividing by 1 + tanAtanB,

= 1+tan(A+B)

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