Question

Help please
On this problem

Answer 1

h ≈ 8.2

Explanation:

Since the triangle is right we can use the cosine ratio to find h

cos47° =
`(adjacent)/(hypotenuse)` =
`(h)/(12)`

Multiply both sides by 12

12 × cos47° = h

⇒ h = 8.2 cm ( 1 dec. place )

Answer 2

`Answer: \\ \cos(47°) = (h)/(12) \\ \Leftrightarrow h = 12\cos(47°) \approx8.2`