sin [3(180° − x)]  = A.   sin 3x
B.   3.sin x
C.   − sin 3x
D.   cos 3x
E.   − cos 3x
A    B    C    D    E

[ 4-4476 - op net sinds 24.2.06-(E)-4.11.2024 ]

Translation in   E N G L I S H

See above

Oplossing - Solution

  sin [3(180° − x)]
= sin (3.180° − 3x)
= sin (540° − 3x)
= sin (180° − 3x)
= sin 3x