Question 138
Evaluate: $\sin 37^{\circ} \cos^{2} 34^{\circ} + 2 \sin 34^{\circ} \cos 37^{\circ} \cos 34^{\circ} - \sin 37^{\circ} \sin^{2} 34^{\circ}$.
MathNet 2019-part-04 — 184 problems (EN–VI) Question 138
Math Olympiad Vault · MathNet 2019-part-04 — 184 problems (EN–VI)