InterviewSolution
`COT""(A+B)/(2)=(m+1)/(m-1)TAN""(B-A)/(2)` `tan""(A+B)/(2)=(m+1)/(m-1)cot""(B-A)/(2)` `cot""(A+B)/(2)=(m+1)/(m-1)tan""(A-B)/(2)` `cot""(A+B)/(2)=(m-1)/(m+1)tan""(A-B)/(2)`
Your experience on this site will be improved by allowing cookies. Read Cookie Policy