Question

Determine as medidas x e y.

(a)


(b)

Answer 1

Boa noite

a)

achando y

sen α = 1 / y 

√17 / 17 = 1 / y 

y√17 = 17

y = 17 / √17

racionalizando.

y = 17.√17 / √17.17

y = 17√17 / 17

y = √17

achando x..

(√17)² = 1² + x²

17 = 1 + x²

x² = 17 - 1

x = √16

x = 4

b)

achando x

√3 = x / 1

x = √3

achando y

y² = (√3)² + 1²

y² = 3 + 1

y = √4

y = 2