418,146 views
14 votes
14 votes
(sin alpha +cos alpha )2

User Meucaa
by
3.2k points

1 Answer

20 votes
20 votes

Explanation:

sin alpha^2 + 2sin alpha* cos alpha + cos alpha^2

sin alpha^2 + cos alpha^2 +2sin alpha* cos alpha

1+ 2sin alpha* cos alpha

1+sin2 alpha

User Agross
by
2.6k points