209,039 views
7 votes
7 votes
Biểu thức sin²x + cos²x có giá trị bằng ?

User Alex Abdugafarov
by
2.9k points

1 Answer

20 votes
20 votes

we have sin²x + cos²x = 1

ok done. Thank to me :>

User Rahul Paru
by
3.4k points