Question

In triangle ABC. tan( A-B-C)=​

Answer 1

Answer:

45°hope it helps you mate

Answer 2

Explanation:

A+B+C=180 so that

B+C=180-A

A-B-C=A-(B+C)=A-(180-A)=2A-180

tan(x-y)=(tanx-tany)/(1+tanxtany)

Therefore ,tan(2A-180)=(tan2A-tan(180))/(1+tan2Atan(180))

=tan2A/1-tan2A)

since tan(180)=-1