524,208 views
22 votes
22 votes
If

sin
x
=
2
9
, x in quadrant I, then find (without finding x) :

sin
(
2
x
)
=


cos
(
2
x
)
=

Incorrect
tan
(
2
x
)
=

User MindGame
by
2.5k points

1 Answer

16 votes
16 votes

Answer:

Explanation:

User Justin Kredible
by
2.9k points