Question

Simplify: (sin Θ − cos Θ)2 + (sin Θ + cos Θ)2

Answer 1

@amistre64

Answer 2

@mtbender74

Answer 3

Well what have you tried? Looks like you should probably square these and see if anything simplifies. Also don't forget the pythagorean identity, \[\sin^2 \theta + \cos^2 \theta = 1\]

Answer 4

As @Kainui said you should expand it and use this formula.

Answer 5

ok :)