Question

tan(a+b+c)=......................? Don't send any useless answer. only send current answer. ​

Answer 1

Step-by-step explanation:

tan (A + B + C) = tan A + tan B + tan C - tan A tan B tan C/ 1 - tan A tan B- tan C tan A - tan B tan C.

Hope it will help u ✌️

Answer 2

STV are collinear because A+B+ C = 180∘, so ∠QSV = ∠UTV = C. Similar triangles △PQR ∼△TRS and △RTU ∼△SRQ give QP RQ = RT SR = TU RQ, and therefore TU = QP = 1. When one of the angles is obtuse, let it (without loss of generality) be C. Then a similar diagram can be drawn, except that V is to the left of Q, and UV, QV count as negative lengths.