Question

Please help me :(
this is really hard

Answer 1

h ≈ 7.9 cm

Explanation:

Using the sine ratio in the right triangle

sin26° =
`(opposite)/(hypotenuse)` =
`(h)/(18)` ( multiply both sides by 18 )

18 × sin26° = h , then

h ≈ 7.9 cm ( to 1 dec. place )

Answer 2

We will find this using trigonometric ratios

We will apply the law of sines

• 
  `\tt \: perpendicular = hypotenuse * \sin( \alpha )`

We are using this law as we have to find perpendicular or height of the triangle.

• Hypotenuse= 18cm
• sin(α)=sin(26°)

Putting values:

`\sf Perpendicular = 18 * \sin(26)`

`\boxed {Perpendicular = 13.72605cm}`