show
that
sin(n+1) A
sin(n+2) A +cos(n+1) A Cos(n+2) A
=
cos
A
Answers
Answered by
0
Answer:
using cos (A-B) formula.
Similar questions
English,
5 months ago
English,
5 months ago
Math,
5 months ago
Social Sciences,
10 months ago
Social Sciences,
1 year ago