Заполни пропуски

Получи верные тригонометрические формулы.

• \(\cos ^2x\)
• \(\ctg x\)
• \(\tg ^2x+1\)
• \(\ctg ^2x+1\)
• \(\sin ^2x\)
• \(\tg ^2x\)

\(\sin ^2x+\) [ ] \(=1\) .

\(\tg x\cdot \) [ ] \(=1\) .

\(\dfrac{1}{\cos ^2x}=\) [ ].

\(\dfrac{1}{\sin ^2x}=\) [ ].