Question

The picture shows a barn door.



What is the length of the bar AC?

6 sin 60°

6 cos 60°

Answer 1

Help

Answer 2

its 6 cos 60 because the component touching the angle is always cosine . . . opposite one is sine

Answer 3

so this is a sine and cosine matter?

Answer 4

there are two other answer options. I will attach them

Answer 5

here they are

Answer 6

no its 6cos 60 . . . here is the explanation . . . in a right angle triangle with hypotanous H, the length of side touching angle\[\theta\] is given by \[H \cos \theta\] whereas the length opposite to angle is \[H \sin \theta\]. . hope it helps

Answer 7

@zainulafaq's answer is correct.\[\frac{\text{AC}}{6}\text{=}\text { Cos}[60{}^{\circ}] \]\[\text{AC}=6\text{ Cos}[60{}^{\circ}]= 6*\frac{1}{2}=3\]

Answer 8

Thank you both!