do this with clear process and send
Attachments:
Answers
Answered by
4
Step-by-step explanation:
sin7A+sin3A+2sin5A/sin9A+sin5A+2sin7A
=2sin5Acos2A+2sin5A/2sin7Acos2A+2sin7A
=2sin5A(cos2A+1)/2sin7A(cos2A+1)
=sin5A/sin7A
Similar questions