True or False?
A real identity — half of them subtly broken. You guess; the verdict is checked, not assumed.
Randomly
equations.identity
equations.identity
Name
Class
Date
-
1.
sin(x)^2 + cos(x)^2 = 1
-
2.
sin(a - b) = sin(a)cos(b) - cos(a)sin(b)
-
3.
ln(exp(a)) = a
-
4.
cos(2x) = cos(x)^2 - sin(x)^2