# What is the amplitude of f(x) = 6 cos (4x) ?​

What is the amplitude of f(x) = 6 cos (4x) ?​

## This Post Has 4 Comments

1. Expert says:

5 cm

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

$\dfrac{x}{40}=\dfrac{4}{32}$               cross multiply

$32x=(40)(4)$

$32x=160$             divide both sides by 32

$x=5$

$Question 3 what is the value of x? cm 3 cm 4 cm 5 cm 4.5cm$

2. Expert says:

The surface area would be 576 because you multiply all the numbers then multiply that number by 6
$Someone this is overdue and i need to do it$

3. Expert says:

step-by-step explanation:

4. Expert says:

I’m sure you could google it. my profile picture might