kaeakal kaeakal

12-04-2021
Mathematics

contestada

HELP please with this

HELP please with this class=

Respuesta :

akposevictor akposevictor

17-04-2021

Answer:

CB = 9

Step-by-step explanation:

To find CB, apply trigonometric function.

Reference angle = 60°

Hypotenuse = 18

Adjacent = CB

Apply CAH:

Cos 60 = Adj/Hyp

Cos 60 = CB/18

Cos 60 × 18 = CB

CB = Cos 60 × 18

CB = 9

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