Math, asked by riiyachawla, 1 year ago

if 3tanAtanB=1 then prove that
2cos(A+B)=cos(A-B)

Answers

Answered by srilathaduganapalli1
29

Hope this helps you.



Attachments:
Answered by dhimanbabita34
7

Answer:

Step-by-step explanation:

Attachments:
Similar questions