IfA+B+C = n and cos A-cos.cos C show that (xi and xii)
(xi) tan B + tan C = tan A
(xi) 2 cot B. Cot C = 1.
Answers
Answered by
5
Step-by-step explanation:
Hope the answer will help you.If you like the answer please rate me and follow me
Attachments:
Similar questions