## anonymous 5 years ago Determine the length of RS to the nearest tenth of a meter. Show the steps and your work. Thank you!

1. anonymous

2. anonymous

Do you know which trig ratio you can use in this problem?

3. anonymous

can you please show me this step by step. thank you

4. anonymous

No worries |dw:1327035521192:dw| $cos \theta=\frac{A}{H}$$sin \theta=\frac{O}{H}$ $tan \theta=\frac{O}{A}$ Which one do we have enough information to use?

5. anonymous

tan

6. anonymous

?

7. anonymous

lol i suck in trig also sorries

8. anonymous

Not tan. We know theta and which side do we know, O, H or A?

9. anonymous

10. anonymous

i mean a

11. Hero

cos(17) = 18.8/RS RS = 18.8/cos(17)

12. anonymous

Perfect. We know adjacent since it is the side that touches the angle. So the trig ratio we'll use is cosine.

13. anonymous

BaileyC does this make sense or would you like me to explain it differently?