Which Of The Following Are Identities Check All That Apply
Which of the following is an identity? Please check the relevant box. 3
A.sin 6x + cos 6x = 43sin 2 2x
B. (senx + cosx) 2 = 1 + sen2x
C. cos 2 3xsin 2 3x = cos6x
D.sinx + sin5x = tan3x
Thanks in advance!
A and C
This is really B and C.
