Trygonomertia, 5 zadań. Zadania w załączniku. Z góry dzięki za jakąkolwiek pomoc!

1 sin 60=CB/10 √3/2=CB/10 2CB=10√3 CB=5√3 cm cos 60=CA/10 1/2=CA/10 CA=5 cm P=1/2*AC*CB P=1/2*5*5√3 P=12,5√3 cm² 2 BC=5 sinCAB=2/3 sinCAB=5/AC 5/AC=2/3 2AC=15 AC=7,5 AB=? AB ²+5 ²=7,5² AB ²+25=56,25 AB ²=56,25-25 AB ²=31,25 AB =√31,25 AB =√125/4 AB=2,5√5 cosCAB=2,5√5/7,5 cosCAB=√5 /3 tgCAB=5/2,5√5 tgCAB=2/√5 tgCAB=2√5 /5 ctgCAB=2,5√5/5 ctgCAB=√5 /2 3 sin α=2/3 2cw. cos α=√1-(2/3)² cos α=√1-4/9 cos α=-√5/9 cos α=-√5 /3 tg α=2/3:(-√5 /3) tg α=-2/√5 tg α=-2√5 /5 ctg α=-√5 /2 4 a) sin x=√3/2 x=π/3 +2kπ, k∈C lub x=2/3 π +2kπ, k∈C b) tg(x-π/3)=1 x-π/3=π/4 +kπ, k∈C x=π/3+π/4 +kπ, k∈C x=7π/12 +kπ, k∈C c) cos² x=3/4 cos x=√3/2 lub cos x=-√3/2 x=π/6+2kπ lub x=-π/6+2kπ lub x=5/6π+2kπ lub x=-5/6π/6+2kπ, k∈C 4 a) cos x≥1/2 x∈<-π/3+2kπ;π/3+2kπ> k∈C b) sin x< 1/2 x∈(-π/2+2kπ;π/6+2kπ)u(5/6π+3/2kπ;π/2kπ) k∈C