Question

Ayuden plis rápido tengo 15 minutos ​

Answer 1

Explicación paso a paso:

Sec(A)= hiptonusa/cateto adyacente(b)

${18}^{2} = {3}^{2} + {b}^{2} \\ 324 = 9 + {b}^{2} \\ 315 = {b}^{2} \\ 17.7 = b$

Sec(A) = 18/17.7= 1.01