tan
4
( − 60° ) =
A.
B. 9
C. − 9
D. 81
E. − 81
[ 4-5088 - op net sinds 20.9.13-(E)-4.11.2023 ]
Translation in E N G L I S H
tan
4
(− 60° ) =
A.
B. 9
C. − 9
D. 81
E. − 81
Oplossing - Solution
tan
4
(− 60° ) = [ tan(− 60°) ]
4
= [ − tan 60° ]
4
= [ tan 60° ]
4
= (
)
4
= [ (
)² ]
2
= 3² = ...
)4 = [ ()² ]2 = 3² = ...