Question

Plsss help i don't knwo thai

Answer 1

Question 4: The value of x is 4.5.

Question 5: The value of x is 15.6.

Solution:

Question 4:

The given triangle is a right triangle.

Using trigonometric formulas for a right triangle.

`$\sin \theta=\frac{\text { opposite }}{\text { hypotenuse }}`

`$\sin C=(AB)/(BC)`

`$\sin 45^\circ=(x)/(6.4)`

`$(1)/(√(2) ) =(x)/(6.4)`

Multiply 6.4 on both sides, we get

`$(6.4)/(√(2) )=x`

x = 4.5

The value of x is 4.5.

Question 5:

The given triangle is a right triangle.

Using trigonometric formulas for a right triangle.

`$\sin \theta=\frac{\text { opposite }}{\text { hypotenuse }}`

`$\sin E=(EF)/(DF)`

`$\sin 60^\circ=(x)/(18)`

`$(\sqrt3)/(2) =(x)/(18)`

Multiply 18 on both sides, we get

x = 15.6

The value of x is 15.6.