Welke gelijkheid is correct ? |
A. sin (180° + α) = sin (180° − α) |
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B. cos (180° + α) = cos (180° − α) | |
C. tan (180° + α) = tan (180° − α) | |
D. tan (180° + α) = tan (− α) | |
E. cos (180° + α) = cos (− α) |
[ 4-3723 - op net sinds 22.6.10-(E)-29.10.2023 ]
Which equality is correct ? |
A. sin (180° + α) = sin (180° − α) |
---|---|
B. cos (180° + α) = cos (180° − α) | |
C. tan (180° + α) = tan (180° − α) | |
D. tan (180° + α) = tan (− α) | |
E. cos (180° + α) = cos (− α) |