## anonymous one year ago Find the value of x to the nearest tenth

1. anonymous

2. anonymous

Any other information?

3. anonymous

yes drawing it now one second

4. anonymous

was about to rub off the crystall ball

5. anonymous

|dw:1438472693286:dw|

6. anonymous

choices are -753.2 , 11.9, 6.5 , 15.4

7. anonymous

|dw:1438473597278:dw| use your SOH CAH TOA $$\bf sin(\theta)=\cfrac{opposite}{hypotenuse} \qquad \qquad % cosine cos(\theta)=\cfrac{adjacent}{hypotenuse} \\ \quad \\ % tangent tan(\theta)=\cfrac{opposite}{adjacent}$$ which of those identies, includes, the hypotenuse, the angle, and the adjacent side? notice we don't have the opposite

8. anonymous

well... we don't have the hypotenuse either, but ...hmmm we're not looking for the opposite, just the hypotenuse

9. anonymous

You can solve this with the following equation cos 33 = 10/ x Just solve for x now

10. anonymous

6.5?

11. anonymous

can it be negative?

12. anonymous

I keep getting x=3.3 but that isn't a choice?

13. anonymous

You need to solve for cos 33 = 10 /x cos 33 = 10 / x x cos 33 = 10 x = 10 / cos 33

14. anonymous

What is $$\huge x = \frac{10}{\cos(33)}$$ make sure your calculator is on degrees.