The following steps show how the right side of
1 + sin(2x) = (sin(x) + cos(x)]? can be rewritten to show it
is an identity.
What are the correct justifications, listed in proper
order?
[sin(x) + cos(x)]
= sin?(x) + 2 sin(x)cos(x) + cos²x)
= 1 + 2 sin(x)cos(x)
= 1 + sin(2x)
O Distributive Property, Pythagorean Identity, Double
Angle Identity
O Pythagorean Identity, Distributive Property, Double
Angle Identity
O Distributive Property, Double Angle Identity,
Pythagorean Identity
O Double Angle Identity, Distributive Property,
Pythagorean Identity