60. Agar sinα=√2/2, cosα=√2/2 bo‘lsa, sin2α ni hisoblang.

Ikki burchak formulasi: \(\sin2\alpha=2\sin\alpha\cos\alpha\).

\(\sin2\alpha=2\cdot\frac{\sqrt2}{2}\cdot\frac{\sqrt2}{2}=1\).

Javob: 1 (B).