1. Un triangolo rettangolo con gli angoli acuti di \( 30^{\circ} \) e \( 60^{\circ} \) ha l'ipotenusa lunga 50 m . \( \rightarrow \) Calcola la lunghezza dei cateti. \( \quad[25 \mathrm{~m} ; 43 \mathrm{~m}] \)

Find an angle \( \theta \) coterminal to \( 1256^{\circ} \), where \( 0^{\circ} \leq \theta<360^{\circ} \)

Find all solutions of the equation \( 2 \cos x-1=0 \). The answer is \( A+B k \pi \) and \( C+D k \pi \) where \( k \) is any integer, \( 0<A<C<2 \pi \), \( A=\square, D=\square \) \( C=\square \)

Solve \( 8 \sin (6 x)=7 \) for the two smallest positive solutions \( A \) and \( B \), with \( A<B \) \( A=\square \) \( B=\square \) Give your answers accurate to at least two decimal places.

Find all solutions of the equation \( 2 \sin x+\sqrt{3}=0 \). The answer is \( A+B k \pi \) and \( C+D k \pi \) where \( k \) is any integer, \( 0<A<C<2 \pi \), \( A=\square, D=\square \) \( C=\square \) \( > \) Next Question

Find an angle \( \theta \) coterminal to \( -468^{\circ} \), where \( 0^{\circ} \leq \theta<360^{\circ} \)