Math, asked by abhinash817, 11 months ago

If A= 60 and B= 30,then prove that Cot (A-B)= (CotA CotB +1)/(Cot B- CotA)

Answers

Answered by kanikalara23
12

Answer:


Step-by-step explanation:    LHS:   cot(A-B)

                                                           cot(60-30) =cot(30)=√3

                                                RHS:    (cot60cot30+1)/(cot30-cot60)

                                                             [{(1/√3)√3}+1]/{√3-(1/√3)} =(1+1)/{(3-1)/√3}

                                                             2/(2/√3)=√3

as LHS =RHS =√3

HENCE,PROVED

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