Question

Medal and fan!! No one understands.
The picture shows a barn door:

Answer 1

What is the length of the support AB?

cos 45 degrees by 7
7 tan 45°
7 by sin 45 degrees
7 cos 45°

Answer 2

see the projection of AB would be AB cos45 and AB sin 45
and u can see ABsin 45 = 7

Answer 3

Remember the trig relationships are:
\[\sin = \frac{opposite}{hypotenuse} \\ \cos = \frac{adjacent}{hypotenuse} \\ \tan = \frac{opposite}{adjacent}\]

If this is your triangle, what sides do you have? What side are you looking for?

Answer 4

I was thinking the third opinion, is that right??

Answer 5

yup...

Answer 6

Awesome! Thank you both, any way i can medal and fan both of you??

Answer 7

Redrawing it like this might help"

Answer 8

One more please?? @rishavraj

Answer 9

@DDCamp

Answer 10

yeah.......