| Welke formule is correct ? |
|---|
A. =\cos\,(45^\circ+\alpha) "\sin\,(45^\circ-\alpha)=\cos\,(45^\circ+\alpha)") |
B. =\cos\,(45^\circ-\alpha) "\sin\,(45^\circ-\alpha)=\cos\,(45^\circ-\alpha)") |
C. =\sin\,(45^\circ+\alpha) "\sin\,(45^\circ-\alpha)=\sin\,(45^\circ+\alpha)") |
D. =\cos\,(\alpha+45^\circ) "\sin\,(\alpha-45^\circ)=\cos\,(\alpha+45^\circ)") |
E. =\sin\,(\alpha-45^\circ) "\sin\,(\alpha+45^\circ)=\sin\,(\alpha-45^\circ)") |
[ 5-3621 - op net sinds 22.12.08-(E)-4.11.2024 ]
Translation in E N G L I S H
|
Which formula is correct ? |
|---|
A. =\cos\,(45^\circ+\alpha) "\sin\,(45^\circ-\alpha)=\cos\,(45^\circ+\alpha)") |
B. =\cos\,(45^\circ-\alpha) "\sin\,(45^\circ-\alpha)=\cos\,(45^\circ-\alpha)") |
C. =\sin\,(45^\circ+\alpha) "\sin\,(45^\circ-\alpha)=\sin\,(45^\circ+\alpha)") |
D. =\cos\,(\alpha+45^\circ) "\sin\,(\alpha-45^\circ)=\cos\,(\alpha+45^\circ)") |
E. =\sin\,(\alpha-45^\circ) "\sin\,(\alpha+45^\circ)=\sin\,(\alpha-45^\circ)") |
Oplossing - Solution
45° − α en 45° + α zijn complementaire hoeken (som 90°)
Dan is de sinus van de ene de cosinus van de andere,
zoals de formule in A aangeeft.
