Question

sin² 60° - cos² 60°=?

Answer 1

sin^2 60- cos^2 60= 1.......

hope its help u

Answer 2

the value of sin60 is root 3 upon 2 and cos 60 is 1 upon 2
by putting value we get
$\binom{3}{4} - \binom{1}{2 }$
the answer 1 upon 2