2025 · Q46
If sinα/sinβ = 4√2/3 and cosα/cosβ = 2√3/9, then what is [the exact requested expression]?
Elementary MathematicsTrigonometry
- A1/√2
- B3/√2
- C1/3
- D2/3
Explanation
Same ratios as Q45; the requested expression could not be recovered (options 1/sqrt(2), 3/sqrt(2), 1/3, 2/3). The stored key B (3/sqrt(2)) agrees with the published coaching key (PW, CDS 2 2025 Set A). Note: key disputed - independent verification inconclusive.