2009 · Q19
If 0 < x < 45° and 45° < y < 90°, then which one of the following is correct?
Elementary MathematicsTrigonometry
- Asin x = sin y
- Bsin x < sin y
- Csin x > xin y
- Dsin x ≤ sin y
Explanation
sin is increasing on [0°,90°], so sin x < sin y.
If 0 < x < 45° and 45° < y < 90°, then which one of the following is correct?
Explanation
sin is increasing on [0°,90°], so sin x < sin y.