Deepak Kumar
Last Activity: 11 Years ago
First, use cos(A-3@)/cos3@ = m to tan3@ by simply expanding cos(A-3@).
Do the same using sin(A-3@)/sin3@ = m and then equate the two.
This way @ is eliminated and you will get the desired result.
Thanks and Regards,
Deepak Kumar
AskIITians Faculty,
B. Tech, IIT Delhi.