Question 144
Calculate $\sin 2x$ if $\sin x - \cos x = \frac{1}{2}$.
MathNet 2008-part-03 — 165 problems (EN–VI) Question 144
Math Olympiad Vault · MathNet 2008-part-03 — 165 problems (EN–VI)
Math Olympiad Vault · MathNet 2008-part-03 — 165 problems (EN–VI)