Question

alguém me ajuda pelo amor de Deus​

Answer 1

a) cos30° = 10/x => x = 10/cos30° => x = 10/0,86 ≈ 11,63cm.

b) tg45° = x/2 => x = 2•tg45° => x = 2•1 => x = 2cm.

c) sen30° = 3/x => x = 3/sen30° => x = 3/0,5 => x = 6 cm.

d) cos28° = x/4 => x = 4•cos28° => x = 4•0,88 = 3,52 cm.