Question

find the value of (1 +CotACotB)^2 + (CotA-CotB)​

Answer 1

Answer:

LHS=cot (A+B)

=1/tan (A+B)

=1/(tanA +tanB/1-tanA tanB)

=1-tanA tanB/tan A+tanB

÷tanA tanB :

=cotA cotB-1/cotA +cot B

=RHS

Step-by-step explanation:

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