Q8 of 87 Page 10

If in a ∆ABC, then find the measures of angles A, B, C.


According to sine law,



So,





Substituting in the given equation,




cot A= cot B=cot C


Or


tan A=tan B=tan C


Which implies


A=B=C


And we know


A+B+C=180°


So,


A=B=C=60°


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