Enter a problem...
Trigonometry Examples
Popular Problems
Trigonometry
Simplify cos(-x)-cos(x)
cos
(
−
x
)
−
cos
(
x
)
Step 1
Since
cos
(
−
x
)
is an even
function
, rewrite
cos
(
−
x
)
as
cos
(
x
)
.
cos
(
x
)
−
cos
(
x
)
Step 2
Subtract
cos
(
x
)
from
cos
(
x
)
.
0
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
Please ensure that your password is at least 8 characters and contains each of the following:
a number
a letter
a special character: @$#!%*?&