Ответ: смотри решение
4) \(sin N = \frac{LQ}{LN}\)
\(cos N = \frac{NQ}{LN}\)
\(tg N = \frac{LQ}{NQ}\)
\(sin L = \frac{NQ}{LN}\)
\(cos L = \frac{LQ}{LN}\)
\(tg L = \frac{NQ}{LQ}\)