sin (180° − 2α)
is gelijk aan
A. sin α
B. cos α
C.
sin 2α
D.
cos 2α
E. sin α.cos α
[ 5-3516 - op net sinds 17.7.12-(E)-27.10.2023 ]
Translation in E N G L I S H
sin (180° − 2α)
is equal to
A. sin α
B. cos α
C.
sin 2α
D.
cos 2α
E. sin α.cos α
Oplossing - Solution
sin(180° − 2α) =
sin (2α) =
.2.sinα.cosα = sinα.cosα