Help! I thought I knew how to do this but my mind is going blank i know it has to do with tan^(-1) but I forgot how to set up the equation...

Question

rhondasommer · Answer

attachment

dumbcow · Answer

tan = opp/adj

$$\tan \theta = \frac{8}{20}$$
$$\theta = \tan^{-1} \frac{8}{20}$$

rhondasommer · Answer

ohhhhhh

rhondasommer · Answer

omg thank you so much

dumbcow · Answer

yw ... just keep a reference sheet so you never forget the ratios for sin,cos , tan

rhondasommer · Answer

but but...when i put it in my caclulator i dont get any of my answere

dumbcow · Answer

make sure you are in the right mode (degrees/radians)

also sometimes calculator will give you an angle in wrong quadrant
tan is positive in 1st and 3rd quadrants.... you want 1st quadrant

rhondasommer · Answer

._.

rhondasommer · Answer

im still not getting any of the answers

rhondasommer · Answer

can you do it and see if you get any of the answers

dumbcow · Answer

ok what are you getting?

rhondasommer · Answer

https://www.symbolab.com/solver/step-by-step/%5Carccos%5Cleft(%5Cfrac%7B8%7D%7B20%7D%5Cright)/?origin=button

rhondasommer · Answer

https://www.symbolab.com/solver/step-by-step/%5Carctan%5Cleft(%5Cfrac%7B8%7D%7B20%7D%5Cright)/?origin=button sorry this not that

dumbcow · Answer

you have to convert it to degrees

the answer is 21.8 degrees

if you round to nearest degree its 22

dumbcow · Answer

0.38051 is in radians .... multiply by 180/pi

rhondasommer · Answer

hmmm ok

rhondasommer · Answer

thank you :)

dumbcow · Answer

https://www.symbolab.com/solver/step-by-step/%5Carctan%5Cleft(%5Cfrac%7B8%7D%7B20%7D%5Cright)%5Ccdot%5Cfrac%7B180%7D%7B%5Cpi%7D/?origin=button

rhondasommer · Answer

thank you!!!