If sin A = n sin B then (n-1)/(n+1) tan (A+B)/(2) is equal to – InterviewSolution

InterviewSolution

1.	If sin A = n sin B then (n-1)/(n+1) tan (A+B)/(2) is equal to
Answer» `SIN((A-B)/(2))` `tan((A-B)/(2))` `cot((A-B)/(2))` `tan((A+B)/(2))` ANSWER :A::B

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