Question

Can someone help me please and thxxx

Answer 1

C

Explanation:

cos 30=12/x

`x = 8 √(3)`

cos60=y/x

`y =4 √(3)`

Answer 2

x =
`8√(3)`

y =
`4√(3)`

Explanation:

• tan 60° = 12/ y [tan θ = opposite/ adjacent]

y = 12/ tan 60°

y =
`4√(3)`

• x² = y² + 12² [Pythagoras's theorem]

x² = (
`4√(3)` )² + 144

x =
`\sqrt{(4√(3))^(2) \space\ + \space\ 144}`

x =
`8√(3)`