/11 'tenise.f /5 (IIu/ 16, It"Iric1r of /I:t' gil'ell subsets of tire I"t Ctor sp(lce Pz (Ire Jub.\/J(u:es ?The set of alt polynomials of the form(a) (l Z + (/ 11 + (10. where (10 = 0(b) (l ~+ (I (lo, lYhere(lo= 2(e) (1 2 + (III + (10, where (I: + (II = a o

L3 - 7 Addition/Subtraction Formulas 6) sin(x ± y)=s i xcosy ± cosxsiny 7) cos(x ± y)=c os xcosy ∓ sinxsiny tanx ± tany 8) tan(x ± y)= 1 ∓ tanxtany Double-Angle Formulas 9) sin(2x)=2s i xcosx 10) cos(2x)=c s 2 x − sin x2 =2c s 2x − 1 =1 − 2s n 2 x Half-Angle Formulas 1+c os2 x) 11) cos x = 2 1 − cos(2x) 12) sin x = 2