a) cos3x.tanx = 0 b) cos(60độ + 2x ) = – √3/2 c) sin^2.x = 1 d) sin( 3x – π/4 ) = 1/2

26/09/2021 Bởi Allison

a) cos3x.tanx = 0
b) cos(60độ + 2x ) = – √3/2
c) sin^2.x = 1
d) sin( 3x – π/4 ) = 1/2

0 bình luận về “a) cos3x.tanx = 0 b) cos(60độ + 2x ) = – √3/2 c) sin^2.x = 1 d) sin( 3x – π/4 ) = 1/2”