Em um triângulo retângulo ABC, a hipotenusa BC mede 30cm, sabe-se que o seno do ângulo oposto ao lado AB mede 0,6. Desse modo, conculise que a medida do lado AB desse triângulo mede:

AB=18cm

Step-by-step explanation:

sabendo que  sin∅=0.6 então

0.6=AB/30cm ⇒ AB=0.6*30cm ⇒ AB=18cm

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.