Question

In △DEF, what is the length of DF

Answer 1

getting started on trigonometry? (-:

Answer 2

lol yep but i suck at it @Spacelimbus

Answer 3

Can you tell me which name DF also has in the language of a 'right triangle'?

Answer 4

an angle

Answer 5

points

Answer 6

Well you are actually right, maybe my notation wasn't rigorous enough.

\[ DF\] is a side, the length of a right triangle, it's at the opposite side of the 90 degree angle, hence this side is the?

Answer 7

For all trig problems it's important that you know which side you're looking for, what name that side can have and the rest is SOH CAH TOA.

Answer 8

ok idont get this so what would the answer be

Answer 9

It's the hypotenuse, have you heard of SOH CAH TOA before?

Answer 10

yeah one of my quiz was called tht

Answer 11

SOH CAH TOA helps you to remember the trig functions

\[\Large \text{SOH} = \sin \alpha = \frac{\text{opposite}}{\text{hypotenuse}} \]

Answer 12

So you see why such statements are important for all trig problems.

Answer 13

i really dont understand how o solve it to get the answer did you look at the pic i posted

Answer 14

yes I did.

Answer 15

So respective to the angle, you know the opposite and you search for the hypotenuse. That's what is given by the picture.