HELP!! MEDAL!!
How do you know if the trig ratios is sin or cosine??

Question

HELP!! MEDAL!!
How do you know if the trig ratios is sin or cosine??

anonymous · Answer

depends on the question i guess
usually you think of sine as "opposite over hypotenuse" and cosine as "adjacent over hypotenuse"

clamin · Answer

|dw:1428628459288:dw| how do you know if its cosine or sin??

crashonce · Answer

well in the first diagram, the angle 70 is related to its adjacent and hypotenuse, which is it?

anonymous · Answer

you know how to find all of them

crashonce · Answer

?

anonymous · Answer

but you are not being asked to find the cosine or sien

anonymous · Answer

you are being asked to find $x$

crashonce · Answer

he/she asked how to recognise if its sin or cos. not to solve it

anonymous · Answer

$$\cos(70^\circ)=\frac{36}{x}$$
$$x=\frac{36}{\cos(70^\circ)}$$

crashonce · Answer

just remember cos=adj/hyp and sin = opp/hyp, then follow satellites method