Prove the identity
(sinx+cosx)^2 = 1+sin2x
Thank you
(sinx+cosx)^2 = sin^2 x + 2 sinx cosx + cos^2 x
now recall the most fundamental of your trig identities, and the double-angle formulas.
(sinx+cosx)^2 = 1+sin2x
Thank you
now recall the most fundamental of your trig identities, and the double-angle formulas.