Question

The figure shows a triangular piece of cloth.



What is the length of the portion BC of the cloth? (4 points)
6 sin 32°
6 cos 32°
sin 32°/6
cos 32°/6

Answer 1

Have you learned the trick SOH CAH TOA?

Answer 2

no

Answer 3

SOH CAH TOA is how I was taught it! Meaning Sin(x)= Opposite/Hypotenuse, Cos(x)= Adjacent/Hypotenuse and tan(x)=Opposite/Adjacent
In this case you have the hypotenuse, and want to find the opposite, so you use sin!
Once you've decided this you can plug in the numbers:\[\sin 32=\frac{ x }{ 6 }\]
And rearrange to get \[x=6\sin 32\]

Answer 4

Hopefully that's a little help in explaining the idea!