Question

28 and/or 29 pls. Find the value of x and y.

Answer 1

Explanation:

for y

take 30 degree as reference angle using sin rule

sin 30=opposite/hypotenuse

1/2=9/y (do cross multiplication)

2*9=y

18=y

for x

using pythagoras theorem

a^2+b^2=c^2

9^2+x^2=18^2

81+x^2=324

x^2=324-81

x^2=243

x=
`\sqrt{243`

x=9
`\sqrt{3`