Find x.

Question

Find x.

anonymous · Answer

found it

anonymous · Answer

haha just joking! go ahead and post the picture i'll do my best to help out!

anonymous · Answer

Here's the picture

anonymous · Answer

ok so in this picture you have the hypotenuse (the longest side of the triangle) and an angle that is opposite x. Do you know which Trigonometric function to use on this?

phi · Answer

do you see the angle?
which of the 3 sides do we know?

phi · Answer

did you learn the 3 sides?  opposite, adjacent and hypotenuse?

anonymous · Answer

i see the angle

phi · Answer

the reason we need the angle is the name of the side depends on which angle we are using.

phi · Answer

one side is "easy".  can you find the hypotenuse?

anonymous · Answer

i know the hypotenuse

phi · Answer

which side is the hypotenuse?  how long is it ?

anonymous · Answer

the one that says 12.1

phi · Answer

ok so we know hypotenuse.

we have 2 sides left.  one is unmarked and the other is labeled x
we need to find x, so we want to use that side.

Now for the million dollar question.  what is the name of the side labeled x if we are at the angle labeled 39º ?

phi · Answer

you have two choices,  adjacent and opposite.

you have to learn how to tell them apart  (and learn their names)

anonymous · Answer

opposite side and yeah I need help telling the diffs between the 2 sides

phi · Answer

adjacent means "next to"
opposite means  "other side"  (roughly speaking)
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