Viola drives 4 kilometers up a hill that makes an angle of 8 degrees with the horizontal. To the nearest tenth of a kilometer, what horizontal distance has she covered?

Question

anonymous · Answer

@SolomonZelman

solomonzelman · Answer

|dw:1398633461386:dw|

anonymous · Answer

So i use Cos?

anonymous · Answer

or 4000*cos (8)

solomonzelman · Answer

Have you learned the law of sines yet ?

A
    I  .
    I     .
    I        .    b
c  I           .
    I              .    
    I                 .
    I___________.
  B          a            C

$$\frac{sinA}{a}=\frac{sinB}{b}=\frac{sinC}{c}$$

anonymous · Answer

no i didnt that isnt even what the lesson is on

solomonzelman · Answer

OKAY... what is your lesson on ? What DID you learn in the lesson ?

anonymous · Answer

I dont know but im getting fustrated