Question

Can someone help me on this

Answer 1

Answer: 17.3ft

Explanation:

Using sine rule

((sin base)/20)= ((sin suzy)/y)

suzy= 180-(90+30)= 180-120=60

((sin 90)/20)= ((sin 60)/y)

(1/20)= (0.8660/y)

Cross multiply

y= 0.8660*20

y= 17.3

Answer 2

10√3 feet

Explanation:

In a 30-60-90 triangle;

-Long leg = long leg

-Short leg = 1/2 * long leg

-2nd longest leg = short leg * √3

-Long leg = 20

-Short leg = 1/2 * long leg = 10

-2nd longest leg = short leg * √3 = 10√3