2012 · Q54
If 0 < theta < 90 degrees, then all the trigonometric ratios can be obtained when:
Elementary MathematicsTrigonometry
- Aonly sin theta is given
- Bonly cos theta is given
- Conly tan theta is given
- Dany one of the six ratios is given
Explanation
In the first quadrant any single ratio determines the triangle, hence all ratios.