Sin(α + β) = sinα · cosβ + cosα · sinβ
sin(π/3 + α) - √3/2cosαα α = 0,
sinπ/3 · cosα + cosπ/3 · sinα - <span>√3/2cosαα α = 0,
</span>√3/2cosαα α + cosπ/3 · sinα - <span>√3/2cosαα α = 0,
</span><span>cosπ/3 · sinα = 0,
</span>1/2 · <span>sinα = 0,
</span><span>sinα = 0,
</span>α = πn, n ∈ Z
√16*900=√16*√900=4*30=120
42х⁵ у² 3
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у⁴ 14х⁵ у²